FIVE-MEMBERED RING-SUBSTITUTED PYRIDAZINOL COMPOUNDS AND DERIVATIVES, PREPARATION METHODS, HERBICIDAL COMPOSITIONS AND APPLICATIONS THEREOF
20210032222 · 2021-02-04
Assignee
Inventors
- Lei LIAN (Qingdao, CN)
- Yurong ZHENG (Qingdao, CN)
- Rongbao HUA (Qingdao, CN)
- Jianfeng WANG (Qingdao, CN)
- Xuegang PENG (Qingdao, CN)
- Qi CUI (Qingdao, CN)
Cpc classification
A01N47/06
HUMAN NECESSITIES
C07D403/04
CHEMISTRY; METALLURGY
C07D413/04
CHEMISTRY; METALLURGY
A01N43/82
HUMAN NECESSITIES
C07D409/04
CHEMISTRY; METALLURGY
C07D417/04
CHEMISTRY; METALLURGY
A01N43/84
HUMAN NECESSITIES
International classification
C07D403/04
CHEMISTRY; METALLURGY
A01N43/82
HUMAN NECESSITIES
A01N43/84
HUMAN NECESSITIES
Abstract
The invention belongs to the technical field of agricultural chemicals, and in particular relates to a five-membered ring-substituted pyridazinol compound and a derivatives thereof, preparation method, herbicidal composition and application thereof. The compound is as shown in Formula I:
##STR00001## wherein, X is halogen, cyano, alkyl, halogenated alkyl, alkoxy, halogenated alkoxy, R.sub.1R.sub.2N(CO), or R.sub.1R.sub.2N, etc.; Ar is
##STR00002##
Het is a 5-membered unsaturated ring, the ring contains, besides the 1-C atom, 0 to 4 atoms or radicals follows to form the ring: O, NR.sub.b, S; R.sub.a is one or more groups selected from: hydrogen, halogen, RO(CH.sub.2).sub.n, and R.sub.1R.sub.2R.sub.3SiO, etc.; m is 0 or 1, n and q are independently an integer from 0 to 8, p is an integer from 1 to 8; R is hydrogen, or a halogen-containing or not containing group selected from alkyl, and alkenyl, etc.; R.sub.b, R.sub.1, R.sub.2, R.sub.3 are each independently hydrogen, nitro, hydroxy, or amino, etc. The compound and the derivative, as well as the composition thereof have very high herbicidal activity and good selectivity, and are safe for crops.
Claims
1. A five-membered ring-substituted pyridazinol compound of Formula I or a derivative thereof: ##STR00661## wherein, X is halogen, cyano, alkyl, halogenated alkyl, alkoxy, halogenated alkoxy, R.sub.1R.sub.2N(CO), R.sub.1R.sub.2N, hydroxy, or unsubstituted or substituted aryl; Ar is ##STR00662## Het is a 5-membered unsaturated ring, the ring contains, besides the 1-C atom, 0 to 4 atoms or radicals follows to form the ring: O, NR.sub.b, S; R.sub.a is one or more groups selected from: hydrogen, halogen, cyano, nitro, azido, a halogen-containing or not containing group selected from alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, and cycloalkylalkyl, a group selected from aryl, arylalkyl, heteroaryl, and heteroarylalkyl, which is unsubstituted or substituted, RO(CH.sub.2).sub.n, RO(CH.sub.2).sub.pO(CH.sub.2).sub.q, RO(CH.sub.2).sub.pS(CH.sub.2).sub.q, RS(CH.sub.2).sub.n, RS(CH.sub.2).sub.pO(CH.sub.2).sub.q, RS(CH.sub.2).sub.pS(CH.sub.2).sub.q, RO(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(O).sub.m, RS(CH.sub.2).sub.n(CS)(CH.sub.2).sub.q(S).sub.m, RO(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(S).sub.m, RO(CH.sub.2).sub.n(CS)(CH.sub.2).sub.q(O).sub.m, RS(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(O).sub.m, RO(CH.sub.2).sub.n(CS)(CH.sub.2).sub.q(S).sub.m, RS(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(S).sub.m, RS(CH.sub.2).sub.n(CS)(CH.sub.2).sub.q(O).sub.m, R(CO)(CH.sub.2).sub.n, R(CS)(CH.sub.2).sub.n, R(CO)(CH.sub.2).sub.nO(CH.sub.2).sub.q, R(CS)(CH.sub.2).sub.nS(CH.sub.2).sub.q, R(CO)(CH.sub.2).sub.nS(CH.sub.2).sub.q, R(CS)(CH.sub.2)O(CH.sub.2).sub.q, RSO(CH.sub.2)(O).sub.m, RSO(CH.sub.2)(S).sub.m, RSO(CH.sub.2).sub.n(NR.sub.3).sub.m, RSO.sub.2(CH.sub.2).sub.n(O).sub.m, RSO.sub.2(CH.sub.2).sub.n(S).sub.m, RSO.sub.2(CH.sub.2).sub.n(NR.sub.3).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.n, R.sub.1R.sub.2N(CH.sub.2).sub.nO(CH.sub.2).sub.q(O).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nO(CH.sub.2).sub.q(S).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nO(CH.sub.2).sub.q(NR.sub.3).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(O).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(S).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q(NR.sub.3).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(CH.sub.2).sub.q(O).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(CH.sub.2).sub.q(S).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(CH.sub.2).sub.q(NR.sub.3).sub.m, R.sub.1R.sub.2PO.sub.3(O).sub.m(CH.sub.2).sub.q, R.sub.1R.sub.2R.sub.3SiO(CH.sub.2).sub.q, R.sub.1R.sub.2R.sub.3Si(CHCH).sub.m(CH.sub.2).sub.q, R.sub.1R.sub.2CN(O).sub.m(CH.sub.2).sub.n, and R.sub.1R.sub.2CNNH(CH.sub.2).sub.n; or two adjacent R.sub.a form OCH.sub.2O, CH.sub.2CH.sub.2O, OCH.sub.2CH.sub.2O, OCH(CH.sub.3)O, OC(CH.sub.3).sub.2O, OCF.sub.2O, CF.sub.2CF.sub.2O, OCF.sub.2CF.sub.2O, or CHCHCHCH; m is 0 or 1, n and q are independently an integer from 0 to 8, p is an integer from 1 to 8; R is hydrogen, a halogen-containing or not containing group selected from alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, and cycloalkylalkyl, or a group selected from aryl, arylalkyl, heteroaryl, and heteroarylalkyl, which is unsubstituted or substituted; R.sub.b, R.sub.1, R.sub.2, R.sub.3 are each independently hydrogen, nitro, hydroxy, amino, a halogen-containing or not containing group selected from alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, cycloalkylalkyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyloxy, alkoxyalkyl, alkoxycarbonyl, alkylsulfanylcarbonyl, alkylsulfonyl, alkylsulfonylalkyl, alkylcarbonyl, alkylcarbonylalkyl, alkylcarbonyloxy, alkylamino, alkylaminocarbonyl, alkoxyaminocarbonyl, alkoxycarbonylalkyl, alkylaminocarbonylalkyl, trialkylsilyl, and dialkylphosphonyl, or a group selected from 6-membered heterocyclyl, aryl, arylalkyl, aryloxy, arylalkyloxy, aryloxyalkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroarylalkyl, heteroaryloxy, heteroarylalkyloxy, heteroaryloxyalkyl, heteroarylcarbonyl, and heteroarylsulfonyl, which is unsubstituted or substituted; or R.sub.1R.sub.2N forms a 6-membered heterocyclyl; or adjacent R.sub.a and R.sub.b form CH.sub.2CH.sub.2NR.sub.3CH.sub.2.
2. The five-membered ring-substituted pyridazinol compound or a derivative thereof according to claim 1, wherein, X is halogen, cyano, C.sub.1-8alkyl, halogenated C.sub.1-8alkyl, C.sub.1-8alkoxy, halogenated C.sub.1-8alkoxy, R.sub.1R.sub.2N(CO), R.sub.1R.sub.2N, hydroxy, or aryl, said aryl is unsubstituted or substituted with 15 substituents independently selected from the group consisting of halogen, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.3-8cycloalkyl, C.sub.3-8cycloalkyl-C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.1-8alkoxy, C.sub.1-8alkylcarbonyl, C.sub.1-8alkoxycarbonyl, C.sub.1-8alkylsulfonyl, C.sub.1-8alkylamino, and C.sub.1-8alkylcarbonyloxy; Ar is ##STR00663## Het is a 5-membered unsaturated heterocycle, the heterocycle contains, besides the 1-C atom, 1 to 4 atoms or radicals follows to form the ring: O, NR.sub.b, S; R.sub.a is one or more substituents selected from: hydrogen, halogen, cyano, nitro, azido, a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.3-8cycloalkyl, C.sub.5-8cycloalkenyl, and C.sub.3-8cycloalkyl-C.sub.1-8alkyl, aryl, aryl-C.sub.1-8alkyl, heteroaryl, heteroaryl-C.sub.1-8alkyl, each of said aryl, aryl-C.sub.1-8alkyl, heteroaryl, or heteroaryl-C.sub.1-8alkyl is unsubstituted or substituted with 15 groups independently selected from halogen, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.3-8cycloalkyl, C.sub.3-8cycloalkyl-C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.1-8alkoxy, C.sub.1-8alkylcarbonyl, C.sub.1-8alkoxycarbonyl, C.sub.1-8alkylsulfonyl, C.sub.1-8alkylamino, and C.sub.1-8alkylcarbonyloxy, RO(CH.sub.2).sub.n, RO(CH.sub.2).sub.pO(CH.sub.2).sub.q, RO(CH.sub.2).sub.pS(CH.sub.2).sub.q, RS(CH.sub.2).sub.n, RS(CH.sub.2).sub.pO(CH.sub.2).sub.q, RS(CH.sub.2).sub.pS(CH.sub.2).sub.q, RO(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q, RS(CH.sub.2).sub.n(CS)(CH.sub.2).sub.q, RO(CH.sub.2).sub.n(CS)(CH.sub.2).sub.q, RS(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q, RO(CO)(CH.sub.2).sub.q(O).sub.m, RS(CS)(CH.sub.2).sub.q(S).sub.m, RO(CO)(CH.sub.2).sub.q(S).sub.m, RO(CS)(CH.sub.2).sub.q(O).sub.m, RS(CO)(CH.sub.2).sub.q(O).sub.m, RO(CS)(CH.sub.2).sub.q(S).sub.m, RS(CO)(CH.sub.2).sub.q(S).sub.m, RS(CS)(CH.sub.2).sub.q(O).sub.m, RO(CH.sub.2).sub.n(CO)(O).sub.m, RS(CH.sub.2).sub.n(CS)(S).sub.m, RO(CH.sub.2).sub.n(CO)(S).sub.m, RO(CH.sub.2).sub.n(CS)(O).sub.m, RS(CH.sub.2).sub.n(CO)(O).sub.m, RO(CH.sub.2).sub.n(CS)(S).sub.m, RS(CH.sub.2).sub.n(CO)(S).sub.m, RS(CH.sub.2).sub.n(CS)(O).sub.m, R(CO), R(CS), R(CO)(CH.sub.2)O, R(CS)(CH.sub.2)S, R(CO)(CH.sub.2)S, R(CS)(CH.sub.2)O, R(CO)O(CH.sub.2).sub.q, R(CS)S(CH.sub.2).sub.q, R(CO)S(CH.sub.2).sub.q, R(CS)O(CH.sub.2).sub.q, RSO(O).sub.m, RSO(S).sub.m, RSO(NR.sub.3).sub.m, RSO.sub.2(O).sub.m, RSO.sub.2(S).sub.m, RSO.sub.2(NR.sub.3).sub.m, RSO(CH.sub.2).sub.n, RSO.sub.2(CH.sub.2).sub.n, R.sub.1R.sub.2N, R.sub.1R.sub.2N(CH.sub.2).sub.nO(CH.sub.2).sub.q, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(CH.sub.2).sub.q, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(CH.sub.2).sub.q, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(O).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(S).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.n(CO)(NR.sub.3).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(O).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(S).sub.m, R.sub.1R.sub.2N(CH.sub.2).sub.nSO.sub.2(NR.sub.3).sub.m, R.sub.1R.sub.2N(CO)(CH.sub.2).sub.n(O).sub.m, R.sub.1R.sub.2N(CO)(CH.sub.2)(S).sub.m, R.sub.1R.sub.2N(CO)(CH.sub.2)(NR.sub.3).sub.m, R.sub.1R.sub.2NSO.sub.2(CH.sub.2).sub.q(O).sub.m, R.sub.1R.sub.2NSO.sub.2(CH.sub.2).sub.q(S).sub.m, R.sub.1R.sub.2NSO.sub.2(CH.sub.2).sub.q(NR.sub.3).sub.m, R.sub.1R.sub.2N(CH.sub.2)O, R.sub.1R.sub.2NO(CH.sub.2).sub.q, R.sub.1R.sub.2PO.sub.3(O).sub.m, R.sub.1R.sub.2R.sub.3SiO, R.sub.1R.sub.2R.sub.3Si(CHCH).sub.m, R.sub.1R.sub.2CN(O).sub.m, and R.sub.1R.sub.2CNNH; or two adjacent R.sub.a form OCH.sub.2O, CH.sub.2CH.sub.2O, OCH.sub.2CH.sub.2O, OCH(CH.sub.3)O, OC(CH.sub.3).sub.2O, OCF.sub.2O, CF.sub.2CF.sub.2O, OCF.sub.2CF.sub.2O, or CHCHCHCH; m is 0 or 1, n and q are independently an integer from 0 to 6, p is an integer from 1 to 6; R is hydrogen, a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.3-8cycloalkyl, C.sub.5-8cycloalkenyl, and C.sub.3-8cycloalkyl-C.sub.1-8alkyl, aryl, aryl-C.sub.1-8alkyl, heteroaryl, or heteroaryl-C.sub.1-8alkyl, each of said aryl, aryl-C.sub.1-8alkyl, heteroaryl, or heteroaryl-C.sub.1-8alkyl is unsubstituted or substituted with 15 groups substituents independently selected from halogen, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.3-8cycloalkyl, C.sub.3-8cycloalkyl-C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.1-8alkoxy, C.sub.1-8alkylcarbonyl, C.sub.1-8alkoxycarbonyl, C.sub.1-8alkylsulfonyl, C.sub.1-8alkylamino, and C.sub.1-8alkylcarbonyloxy; R.sub.b, R.sub.1, R.sub.2, R.sub.3 are each independently hydrogen, nitro, hydroxy, amino, a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.3-8cycloalkyl, C.sub.5-8cycloalkenyl, C.sub.3-8cycloalkyl-C.sub.1-8alkyl, C.sub.1-8alkoxy, C.sub.2-8alkenyloxy, C.sub.2-8alkynyloxy, C.sub.3-8cycloalkyloxy, C.sub.1-8alkoxy-C.sub.1-8alkyl, C.sub.1-8alkoxycarbonyl, C.sub.1-8alkylcarbonyl-C.sub.1-8alkyl, C.sub.1-8alkylsulfanylcarbonyl, C.sub.1-8alkylsulfonyl, C.sub.1-8alkylsulfonyl-C.sub.1-8alkyl, C.sub.1-8alkylcarbonyl, C.sub.1-8alkylcarbonyloxy, C.sub.1-8alkylamino, C.sub.1-8alkylaminocarbonyl, C.sub.1-8alkoxyaminocarbonyl, C.sub.1-8alkoxycarbonyl-C.sub.1-8alkyl, C.sub.1-8alkylaminocarbonyl-C.sub.1-8alkyl, triC.sub.1-8alkylsilyl, and diC.sub.1-8alkylphosphonyl, 6-membered heterocyclyl, aryl, aryl-C.sub.1-8alkyl, aryloxy, aryl-C.sub.1-8alkyloxy, aryloxy-C.sub.1-8alkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroaryl-C.sub.1-8alkyl, heteroaryloxy, heteroaryl-C.sub.1-8alkyloxy, heteroaryloxy-C.sub.1-8alkyl, heteroarylcarbonyl, or heteroarylsulfonyl, each of said 6-membered heterocyclyl, aryl, aryl-C.sub.1-8alkyl, aryloxy, aryl-C.sub.1-8alkyloxy, aryloxy-C.sub.1-8alkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroaryl-C.sub.1-8alkyl, heteroaryloxy, heteroaryl-C.sub.1-8alkyloxy, heteroaryloxy-C.sub.1-8alkyl, heteroarylcarbonyl, or heteroarylsulfonyl is unsubstituted or substituted with 15 groups independently selected from halogen, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a halogen-containing or not containing group selected from C.sub.1-8alkyl, C.sub.3-8cycloalkyl, C.sub.3-8cycloalkyl-C.sub.1-8alkyl, C.sub.2-8alkenyl, C.sub.2-8alkynyl, C.sub.1-8alkoxy, C.sub.1-8alkylcarbonyl, C.sub.1-8alkoxycarbonyl, C.sub.1-8alkylsulfonyl, C.sub.1-8alkylamino, and C.sub.1-8alkylcarbonyloxy; or R.sub.1R.sub.2N forms a 6-membered heterocyclyl containing or not containing other hetero atoms; or adjacent R.sub.a and R.sub.b form CH.sub.2CH.sub.2NR.sub.3CH.sub.2; the derivative refers to an agriculturally acceptable derivative of the 4-hydroxy of the pyridazine ring of Formula I.
3. The five-membered ring-substituted pyridazinol compound or a derivative thereof according to claim 1 or 2, wherein, X is fluorine, chlorine, bromine, iodine, cyano, C.sub.1-6alkyl, halogenated C.sub.1-6alkyl, C.sub.1-6alkoxy, halogenated C.sub.1-6alkoxy, R.sub.1R.sub.2N(CO), R.sub.1R.sub.2N, hydroxy, or phenyl, said phenyl is unsubstituted or substituted with 15 substituents independently selected from the group consisting of halogen, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a halogen-containing or not containing group selected from C.sub.1-6alkyl, C.sub.3-6cycloalkyl, C.sub.3-6cycloalkyl-C.sub.1-6alkyl, C.sub.2-6alkenyl, C.sub.2-6alkynyl, C.sub.1-6alkoxy, C.sub.1-6alkylcarbonyl, C.sub.1-6alkoxycarbonyl, C.sub.1-6alkylsulfonyl, C.sub.1-6alkylamino, and C.sub.1-6alkylcarbonyloxy; Ar is ##STR00664## Het is a 5-membered unsaturated heterocycle, the heterocycle contains, besides the 1-C atom, 2, 3, or 4 atoms or radicals follows to form the ring: O, NR.sub.b, S; R.sub.a is one or more substituents selected from: hydrogen, fluorine, chlorine, bromine, cyano, nitro, azido, a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6alkyl, C.sub.2-6alkenyl, C.sub.2-6alkynyl, C.sub.3-6cycloalkyl, C.sub.5-6cycloalkenyl, and C.sub.3-6cycloalkyl-C.sub.1-6alkyl, aryl, aryl-C.sub.1-6alkyl, heteroaryl, heteroaryl-C.sub.1-6alkyl, each of said aryl, aryl-C.sub.1-6alkyl, heteroaryl, or heteroaryl-C.sub.1-6alkyl is unsubstituted or substituted with 13 groups independently selected from fluorine, chlorine, bromine, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6alkyl, C.sub.3-6cycloalkyl, C.sub.3-6cycloalkyl-C.sub.1-6alkyl, C.sub.2-6alkenyl, C.sub.2-6alkynyl, C.sub.1-6alkoxy, C.sub.1-6alkylcarbonyl, C.sub.1-6alkoxycarbonyl, C.sub.1-6alkylsulfonyl, C.sub.1-6alkylamino, and C.sub.1-6alkylcarbonyloxy, RO, RO(CH.sub.2).sub.pO, RO(CH.sub.2).sub.pS, RS, RS(CH.sub.2).sub.pO, RS(CH.sub.2).sub.pS, RO(CO)(O).sub.m, RS(CS)(S).sub.m, RO(CO)(S).sub.m, RO(CS)(O).sub.m, RS(CO)(O).sub.m, RO(CS)(S).sub.m, RS(CO)(S).sub.m, RS(CS)(O).sub.m, RO(CO)(CH.sub.2).sub.q, RS(CS)(CH.sub.2).sub.q, RO(CS)(CH.sub.2).sub.q, RS(CO)(CH.sub.2).sub.q, RO(CH.sub.2).sub.n(CO), RS(CH.sub.2).sub.n(CS), RO(CH.sub.2).sub.n(CS), RS(CH.sub.2).sub.n(CO), R(CO), R(CS), R(CO)O, R(CS)S, R(CO)S, R(CS)O, RSO, RSO.sub.2, R.sub.1R.sub.2N, R.sub.1R.sub.2NO, R.sub.1R.sub.2N(CO)(CH.sub.2).sub.p, R.sub.1R.sub.2N(CO)(O).sub.m, R.sub.1R.sub.2N(CO)(S).sub.m, R.sub.1R.sub.2N(CO)(NR.sub.3).sub.m, R.sub.1R.sub.2NSO.sub.2(CH.sub.2).sub.p, R.sub.1R.sub.2NSO.sub.2, R.sub.1R.sub.2N(CH.sub.2).sub.p(CO), R.sub.1R.sub.2N(CH.sub.2).sub.pSO.sub.2, R.sub.1R.sub.2N(CH.sub.2).sub.pO, R.sub.1R.sub.2NO(CH.sub.2).sub.p, R.sub.1R.sub.2PO.sub.3, R.sub.1R.sub.2R.sub.3SiO, R.sub.1R.sub.2R.sub.3Si, R.sub.1R.sub.2R.sub.3SiCHCH, R.sub.1R.sub.2CN, R.sub.1R.sub.2CNO, and R.sub.1R.sub.2CNNH; or two adjacent R.sub.a form CHCHCHCH; m is 0 or 1, n and q are each independently 0, 1, 2, 3 or 4, p is 1, 2, 3 or 4; R is hydrogen, a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6alkyl, C.sub.2-6alkenyl, C.sub.2-6alkynyl, C.sub.3-6cycloalkyl, C.sub.5-6cycloalkenyl, and C.sub.3-6cycloalkyl-C.sub.1-6alkyl, aryl, aryl-C.sub.1-6alkyl, heteroaryl, or heteroaryl-C.sub.1-6alkyl, each of said aryl, aryl-C.sub.1-6alkyl, heteroaryl, or heteroaryl-C.sub.1-6alkyl is unsubstituted or substituted with 13 substituents independently selected from the group consisting of fluorine, chlorine, bromine, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6alkyl, C.sub.3-6cycloalkyl, C.sub.3-6cycloalkyl-C.sub.1-6alkyl, C.sub.2-6alkenyl, C.sub.2-6alkynyl, C.sub.1-6alkoxy, C.sub.1-6alkylcarbonyl, C.sub.1-6alkoxycarbonyl, C.sub.1-6alkylsulfonyl, C.sub.1-6alkylamino, and C.sub.1-6alkylcarbonyloxy; R.sub.b, R.sub.1, R.sub.2, R.sub.3 are each independently hydrogen, nitro, hydroxy, amino, a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6alkyl, C.sub.2-6alkenyl, C.sub.2-6alkynyl, C.sub.3-6cycloalkyl, C.sub.5-6cycloalkenyl, C.sub.3-6cycloalkyl-C.sub.1-6alkyl, C.sub.1-6alkoxy, C.sub.2-6 alkenyloxy, C.sub.2-6 alkynyloxy, C.sub.3-6 cycloalkyloxy, C.sub.1-6 alkoxy-C.sub.1-6 alkyl, C.sub.1-6 alkoxycarbonyl, C.sub.1-6 alkylsulfanylcarbonyl, C.sub.1-6 alkylsulfonyl, C.sub.1-6 alkylsulfonyl-C.sub.1-6 alkyl, C.sub.1-6 alkylcarbonyl, C.sub.1-6 alkylcarbonyl-C.sub.1-6 alkyl, C.sub.1-6 alkylcarbonyloxy, C.sub.1-6 alkylamino, C.sub.1-6 alkylaminocarbonyl, C.sub.1-6 alkoxyaminocarbonyl, C.sub.1-6 alkoxycarbonyl-C.sub.1-6 alkyl, C.sub.1-6 alkylaminocarbonyl-C.sub.1-6 alkyl, triC.sub.1-6 alkylsilyl, and diCi.sub.1-6 alkylphosphonyl, ##STR00665## aryl, aryl-C.sub.1-6 alkyl, aryloxy, aryl-C.sub.1-8alkyloxy, aryloxy-C.sub.1-6 alkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroaryl-C.sub.1-6 alkyl, heteroaryloxy, heteroaryl-C.sub.1-6 alkyloxy, heteroaryloxy-C.sub.1-6 alkyl, heteroarylcarbonyl, or heteroarylsulfonyl, each of said ##STR00666## aryl, aryl-C.sub.1-6 alkyl, aryloxy, aryl-C.sub.1-6 alkyloxy, aryloxy-C.sub.1-8alkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroaryl-C.sub.1-6 alkyl, heteroaryloxy, heteroaryl-C.sub.1-6 alkyloxy, heteroaryloxy-C.sub.1-6 alkyl, heteroarylcarbonyl, or heteroarylsulfonyl is unsubstituted or substituted with 13 groups independently selected from fluorine, chlorine, bromine, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkyl-C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.1-6 alkoxy, C.sub.1-6 alkylcarbonyl, C.sub.1-6 alkoxycarbonyl, C.sub.1-6 alkylsulfonyl, C.sub.1-6 alkylamino, and C.sub.1-6 alkylcarbonyloxy; or R.sub.1R.sub.2N is ##STR00667## or adjacent R.sub.a and R.sub.b form CH.sub.2CH.sub.2N(Boc)CH.sub.2; the aryl is selected from ##STR00668## the heteroaryl is selected from ##STR00669## ##STR00670## R is hydrogen, nitro, hydroxy, amino, a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl, C.sub.5-6 cycloalkenyl, C.sub.3-6 cycloalkyl-C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.2-6 alkenyloxy, C.sub.2-6 alkynyloxy, C.sub.3-6 cycloalkyloxy, C.sub.1-6 alkoxy-C.sub.1-6 alkyl, C.sub.1-6 alkoxycarbonyl, C.sub.1-6 alkylsulfanylcarbonyl, C.sub.1-6 alkylsulfonyl, C.sub.1-6 alkylsulfonyl-C.sub.1-6 alkyl, C.sub.1-6 alkylcarbonyl, C.sub.1-6 alkylcarbonyl-C.sub.1-6 alkyl, C.sub.1-6 alkylcarbonyloxy, C.sub.1-6 alkylamino, C.sub.1-6 alkylaminocarbonyl, C.sub.1-6 alkoxyaminocarbonyl, C.sub.1-6 alkoxycarbonyl-C.sub.1-6 alkyl, C.sub.1-6 alkylaminocarbonyl-C.sub.1-6 alkyl, triC.sub.1-6 alkylsilyl, and diCi.sub.1-6 alkylphosphonyl, ##STR00671## aryl, aryl-C.sub.1-8alkyl, aryloxy, aryl-C.sub.1-6 alkyloxy, aryloxy-C.sub.1-6 alkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroaryl-C.sub.1-6 alkyl, heteroaryloxy, heteroaryl-C.sub.1-6 alkyloxy, heteroaryloxy-C.sub.1-6 alkyl, heteroarylcarbonyl, or heteroarylsulfonyl, each of said ##STR00672## aryl, aryl-C.sub.1-6 alkyl, aryloxy, aryl-C6 alkyloxy, aryloxy-C.sub.1-6 alkyl, arylcarbonyl, arylsulfonyl, heteroaryl, heteroaryl-C.sub.1-6 alkyl, heteroaryloxy, heteroaryl-C.sub.1-6 alkyloxy, heteroaryloxy-C.sub.1-6 alkyl, heteroarylcarbonyl, or heteroarylsulfonyl is unsubstituted or substituted with 13 groups independently selected from fluorine, chlorine, bromine, cyano, nitro, hydroxy, carboxyl, sulfhydryl, amino, and a fluoro-, chloro-, or bromo-containing or not containing group selected from C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkyl-C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.1-6 alkoxy, C.sub.1-6 alkylcarbonyl, C.sub.1-6 alkoxycarbonyl, C.sub.1-6 alkylsulfonyl, C.sub.1-6 alkylamino, and C.sub.1-6 alkylcarbonyloxy; the derivative refers to an agriculturally acceptable derivative of the 4-hydroxy of the pyridazine ring of Formula I, including a salt, an ester, a hydrazine, a hydroxylamine, an ether thereof, and the like.
4. The five-membered ring-substituted pyridazinol compound or a derivative thereof according to claim 1 or 2, wherein, X represents fluorine, chlorine, bromine, iodine, cyano, methyl, ethyl, trifluoromethyl, pentafluoroethyl, difluoromethyl, monofluoromethyl, methoxy, ethoxy, trifluoromethoxy, or pentafluoroethoxy; Het is ##STR00673## R.sub.a is selected from one or more of the following groups: hydrogen, methyl, ethyl, cyano, cyclopropyl, phenyl, fluorine, chlorine, bromine, iodine, cyano, nitro, difluoromethyl, 2,2,2,-trifluoroethyl, trifluoromethyl, methoxy, ethoxy, benzyloxy, COOEt, amino, methylamino, dimethylamino, acetyl amino, ##STR00674## or Ar is ##STR00675## R.sub.b represents hydrogen, methyl, ethyl, n-propyl, isopropyl, difluoromethyl, 2,2,2-trifluoroethyl, acetyl, phenyl, benzyl, ##STR00676## or triphenylmethyl; the derivative refers to an agriculturally acceptable derivative of the 4-hydroxy of the pyridazine ring of Formula I, including a salt, an ester, a hydrazine, a hydroxylamine, an ether thereof, and the like.
5. A method for preparing a five-membered ring-substituted pyridazinol compound or derivative thereof according to any one of claims 1 to 4, comprising: the method for preparing the five-membered ring-substituted pyridazinol compound, comprising the steps of: (1) subjecting a compound of Formula II and a compound of Formula III to Suzuki reaction to obtain a compound of Formula IV; (2) subjecting a compound of Formula IV to halogenating reaction to obtain a compound of Formula V; (3) subjecting a compound of Formula V to hydrolysis reaction to obtain a compound of Formula I; wherein the reaction route is as follows: ##STR00677## L.sub.1, L.sub.2 each independently represent halogen, preferably chlorine, bromine, or iodine; the reaction route for preparing an ester or ether derivative is as follows: ##STR00678## wherein, Y.sub.1 is a halogen, preferably chlorine or bromine; the reaction route for preparing an oxime or hydroxylamine derivative is as follows: ##STR00679## wherein, Y.sub.2 is a halogen, preferably chlorine or fluorine.
6. The method for preparing a five-membered ring-substituted pyridazinol compound or derivative thereof according to claim 5, wherein, the reactions are carried out in the range of 20 to 150 C., preferably 50 to 130 C.; step (1) is carried out in the presence of a catalyst, a base and a solvent, wherein the catalyst is Pd(dppf)Cl.sub.2CH.sub.2Cl.sub.2, Pd(dba).sub.2, Pd.sub.2(dba).sub.3, Pd(PPh.sub.3).sub.4, PdCl.sub.2, Pd(OAc).sub.2, Pd(dppf)Cl.sub.2, Pd(PPh.sub.3).sub.2Cl.sub.2, or Ni(dppf)Cl.sub.2, the base is one or more selected from Et.sub.3N, NaHCO.sub.3, KOAc, K.sub.2CO.sub.3, K.sub.3PO.sub.4, Na.sub.2CO.sub.3, CsF, Cs.sub.2CO.sub.3, t-BuONa, EtONa, KOH and NaOH, the solvent is THF/water, toluene/water, DMF/water, 1,4-dioxane/water, toluene/ethanol/water, acetonitrile/water, THF, toluene, 1,4-dioxane, acetonitrile, or DMF system; step (2) is carried out in the presence of a halogenated reagent, a catalyst and a solvent, wherein the halogenated reagent is N-chloro succinimide, N-bromo succinimide or N-iodo succinimide, the catalyst is benzoyl peroxide, and the solvent is acetonitrile; step (3) is carried out in the presence of a base and a solvent or in the presence of a solution of boron tribromide, a solution of hydrobromic acid in acetic acid, a solution of hydrochloric acid in methanol or a solution of hydrochloric acid in ethyl acetate, the base is preferably selected from NaOH, KOH, potassium acetate, and sodium acetate, the solvent is preferably water or DMSO; reactions for preparing the ester or ether derivatives and the second step for preparing the oxime or hydroxylamine derivatives are carried out in the presence of a base and a solvent, the base is one or more selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, cesium carbonate, triethylamine and diisopropylethylamine; the solvent is THF, 1,4-dioxane, toluene, 1,2-dichloroethane, ethyl acetate, acetonitrile, DMF, acetone, dichloromethane, or chloroform; the first step for preparing the oxime or hydroxylamine derivative is carried out in the presence of a halogenation reagent and a solvent, wherein the halogenation reagent is Phenofluor/cesium fluoride or POCl.sub.3, and the solvent is one or more selected from the group consisting of toluene, 1,2-dichloroethane, and DMF; the reaction temperature is in the range of 0 to 120 C., preferably 20 to 80 C.
7. A herbicidal composition, comprising component (i) a five-membered ring-substituted pyridazinol compound of Formula I or a derivative thereof according to any one of claims 1 to 4; preferably, further comprising component (ii) one or more additional herbicides and/or safeners; more preferably, further comprising component (iii) an agriculturally acceptable formulation auxiliary.
8. The herbicidal composition according to claim 7, wherein the additional herbicide is selected from the group consisting of an HPPD inhibitor, a hormone herbicide, and a PDS inhibitor; preferably, the HPPD inhibitor is selected from the group consisting of Sulcotrione, Mesotrione, Topramezone, Tembotrione, Bicyclopyrone, Tefuryltrione, Benzobicyclon, Lancotrione, Shuangzuocaotong, Huanbifucaotong, Sanzuohuangcaotong, Benzuofucaotong, Pyrasulfotole, Pyrazolate, Benzofenap, Tolpyralate, Fenquinotrione, and Isoxaflutole; the hormone herbicide is selected from the group consisting of Fluroxypyr, Halauxifen-methyl, Florpyrauxifen-benzyl, Quinclorac, Quinmerac, 2-methyl-4-chlorophenoxy acetic acid, 2-methyl-4-chlorophenoxypropionic acid, MCPB, 2,4-D, Dichlorprop, 2,4-DB, Dicamba, Picloram, Trichlopyr, Clopyralid, Triclopyr and derivatives thereof, the PDS inhibitor is selected from the group consisting of Flurochloridone, Flurtamone, Diflufenican, Picolinafen, Beflubutamid, Norflurazon and Fluridone.
9. A method for controlling a harmful plant, comprising applying at least one of herbicidally effective amount of the five-membered ring-substituted pyridazinol compound or derivative thereof according to any one of claims 1 to 4, or the herbicidal composition according to any one of claims 7 to 8 to the harmful plant or an area with the harmful plant.
10. Use of at least one of the five-membered ring-substituted pyridazinol compound or derivative thereof according to any one of claims 1 to 4, or the herbicidal composition according to any one of claims 7 to 8 for controlling a harmful plant; preferably, the five-membered ring-substituted pyridazinol compound or derivative thereof is used to control a harmful plant in a useful crop, the useful crop is a genetically modified crop or a crop treated by genome editing technique.
Description
SPECIFIC MODE FOR CARRYING OUT THE INVENTION
[0101] The following embodiments are used to illustrate the present invention in detail and should not be taken as any limit to the present invention. The scope of the invention would be explained through the Claims.
[0102] In view of economics, variety and biological activity of a compound, we preferably synthesized several compounds, part of which are listed in the following table 1-2. The structure and information of a certain compound are shown in Table 1-2. The compounds in Table 1-2 are listed for further explication of the present invention, other than any limit therefor. The subject of the present invention should not be interpreted by those skilled in the art as being limited to the following compounds.
TABLE-US-00001 TABLE 1 Structure and .sup.1HNMR data of Compound I I
TABLE-US-00002 TABLE 2 Structure of group M in the derivative Compound I-1 I-1
TABLE-US-00003 TABLE 3 Structure and .sup.1HNMR data of the derivative Compound I-1 I-1
[0103] The method for preparing the compound of the invention will be explained in detail in the following program and embodiment. The material is commercial available or prepared through known method reported in the literature or shown in the route. Those skilled in the art should understand that the compound of the invention can also be synthesized by other synthetic route.
[0104] Although the detailed material and reaction condition in the synthetic route have been explicated in the following text, it is still easy to be replaced by other similar material and condition. Isomer of the compound, for example, that produced with the variation of the preparation method of the present invention is included in the scope of the present invention. In addition, the following preparation method can be further modified according to the disclosures of the present invention by using common chemical method known to those skilled in the art, for example, protection of suitable group in the process of the reaction, etc.
[0105] The following method of application can be used to improve further understanding of the preparation method of the present invention. The specific material, class and condition have been determined to be further explication of the present invention, not to beany limit of the reasonable scope thereof. Reagents of the following synthetic compound showed in the table can either be purchased from the market or easily prepared by those skilled in the art.
[0106] Examples of representative compounds are as follows:
[0107] 1. Synthesis of Compound 1
##STR00642##
[0108] (1) To a three-necked round bottom flask, compound 1-a (10 g, 67 mmol), compound 1-b (14.9 g, 67 mmol) and potassium carbonate (27.8 g, 201 mmol) were charged, and nitrogen replacement was performed three times after the addition of 1,4-dioxane (100 mL)/water (20 mL). Pd(dppf)Cl.sub.2CH.sub.2Cl.sub.2 (0.2 g) was added quickly under nitrogen protection and then nitrogen replacement was performed three times. The reaction solution was treated by nitrogen replacement for another three times and reacted at 100 C. for 16 h. After high performance liquid chromatography detection showed the completion of the reaction, the reaction system was concentrated and subjected to column chromatography separation to obtain 10 g (48 mmol, yield 71%) of compound 1-c (grey solid).
[0109] (2) To a three-necked round bottom flask, compound 1-c (10 g, 48 mmol), N-chloro succimide (6.4 g, 48 mmol), benzoyl peroxide (0.5 g, catalytic amount) and acetonitrile (100 mL) were charged and reacted at 80 C. for 16 h. A small amount of the raw material was detected to remain by high performance liquid chromatography. The reaction system was concentrated and subjected to column chromatography separation to obtain 5 g (21 mmol, yield 42%) of compound 1-d (white solid).
[0110] (3) To a three-necked round bottom flask, compound 1-d (1 g, 4 mmol), potassium acetate (2 g, 20 mmol) and 10 mL of DMSO were charged and reacted at 120 C. for 2 h. After high performance liquid chromatography detection showed the completion of the reaction, the reaction solution was cooled to 25 C. and added with 1M HCl in a dropwise manner with temperature control (no higher than 25 C.) till pH of the solution was around 5. Solid was precipitated out, which was collected by suction filtration, washed with a large quantity of water, purified by beating with methyl tert-butyl ether (20 mL) and a small amount of methanol (1 mL). After suction filtration, the solid was dried to obtain 300 mg (1.3 mmol, yield 32%) of compound 1 (off-white solid).
[0111] 2. Synthesis of Compound 1-1
##STR00643##
[0112] To a 50 mL eggplant-shaped flask, compound 1 (1 equiv.), potassium carbonate (3 equiv.) and acetonitrile (10V) were charged at room temperature, then added with
##STR00644##
(1.2 equiv.) and stirred for 30 minutes after the addition. TLC detection showed the completion of the reaction. The reaction system was concentrated to remove acetonitrile, then dissolved with water (5V) and extracted with ethyl acetate (5V*3), then ethyl acetate was removed by vacuum distillation. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 72%.
[0113] 3. Synthesis of Compound 1-5
##STR00645##
[0114] To a 50 mL eggplant-shaped flask, compound 1 (1 equiv.), triethyl amine (2 equiv.) and dichloromethane (5V) were charged in ice bath, and
##STR00646##
(1.2 equiv.) was added in ice bath and stirred for 30 minutes at room temperature. TLC detection showed the completion of the reaction. The reaction system was added with water and extracted with dichloromethane (5V*3), and then subjected to vacuum distillation to remove dichloromethane. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 73%.
[0115] 4. Synthesis of Compound 1-6
##STR00647##
[0116] To a 50 mL eggplant-shaped flask, compound 1 (1 equiv.),
##STR00648##
(1.2 equiv.), potassium carbonate (3 equiv.) and acetonitrile (10 V) were charged, then heated to 80 C. and stirred for 12 h. TLC detection showed the completion of the reaction. The reaction system was subjected to vacuum distillation to remove acetonitrile, then dissolved with water (5V) and extracted with ethyl acetate (5V*3), and then ethyl acetate was removed by vacuum distillation. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 79%.
[0117] 5. Synthesis of Compound 1-8
##STR00649##
[0118] To a 50 mL eggplant-shaped flask, compound 1 (1 equiv.), potassium carbonate (3 equiv.) and acetonitrile (10 V) were charged, and
##STR00650##
(1.2 equiv.) was added in a dropwise manner and stirred for 30 min at room temperature after the addition. TLC detection showed the completion of the reaction. The reaction system was subjected to vacuum distillation to remove acetonitrile, then dissolved with water (5V) and extracted with ethyl acetate (5V*3), and then ethyl acetate was removed by vacuum distillation. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 72%.
[0119] 6. Synthesis of Compound 1-9
##STR00651##
[0120] To a 50 mL eggplant-shaped flask, compound 1 (1 equiv.)
##STR00652##
(1.2 equiv.), potassium carbonate (3 equiv.) and acetonitrile (10 V) were charged, then heated to 80 C. and stirred for 12 h. TLC detection showed the completion of the reaction. The reaction system was subjected to vacuum distillation to remove acetonitrile, then dissolved with water (5V) and extracted with ethyl acetate (5V*3), and then ethyl acetate was removed by vacuum distillation. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 85%.
[0121] 7. Synthesis of Compound 1-25
##STR00653##
[0122] With reference to the preparation method of compound 1, compound 9 was prepared. Then to a 50 mL eggplant-shaped flask, compound 9 (1 equiv.), triethyl amine (3 equiv.) and dichloromethane (10 V) were charged in ice bath, and
##STR00654##
(1.2 equiv.) was added in dropwise manner in ice bath, and then stirred at room temperature for 30 min. TLC detection showed the completion of the reaction. The reaction system was added with water (5V) and extracted with dichloromethane (5V*3), and then subjected to vacuum distillation to remove dichloromethane. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 81%.
[0123] 8. Synthesis of Compound 1-36
##STR00655##
[0124] With reference to the preparation method of compound 1, compound 22 was prepared. Then to a 50 mL eggplant-shaped flask, compound 22 (1 equiv.), Phenofluor (1.5 equiv.), cesium fluoride (3 equiv.) and toluene (10 V) were charged, then heated to 80 C. and stirred for 18 h. TLC detection showed the completion of the reaction. Intermediate 1-36-a was obtained after work-up. To another 50 mL eggplant-shaped flask, compound 1-36-a (1 equiv.),
##STR00656##
(1.2 equiv.), potassium carbonate (3 equiv.) and acetonitrile (10 V) were charged, then heated to 80 C. and stirred for 18 h. TLC detection showed the completion of the reaction. The reaction system was subjected to vacuum distillation to remove acetonitrile, then added with water (5V) and extracted with ethyl acetate (5V*3), and then ethyl acetate was removed by vacuum distillation. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 65%.
[0125] 9. Synthesis of Compound 1-47
##STR00657##
[0126] With reference to the preparation method of compound 1, compound 48 was prepared. Then to a 50 mL eggplant-shaped flask, compound 48 (1 equiv.), POCl.sub.3 (1.5 equiv.), 1,2-dichloroethane (10 V) and 5% N,N-dimethylformamide were charged, then heated to 80 C. and stirred for 6 h. TLC detection showed the completion of the reaction. Water (5V) was added for dissolution and extracted with 1,2-dichloromethane (5V*3), and then 1,2-dichloroethane was removed by vacuum distillation to obtain compound 1-47a. To another 50 mL eggplant-shaped flask, compound 1-47-a (1 equiv.),
##STR00658##
(1.2 equiv.), potassium hydroxide (3 equiv.) and N,N-dimethyl formamide (10 V) were charged, then heated to 100 C. and stirred for 18 h. TLC detection showed the completion of the reaction. The reaction system was diluted with water (5V) and extracted with ethyl acetate (5V*3), and then ethyl acetate was removed by vacuum distillation. The residue was separated through silica gel column chromatography (100 mesh to 200 mesh) to obtain the product with yield of 48%.
[0127] Evaluation of Biological Activity:
[0128] The activity level standard of harmful plant destruction (i.e. growth inhibition rate) is as follows:
[0129] Level 10: completely dead;
[0130] Level 9: above 90% growth inhibition rate;
[0131] Level 8: above 80% growth inhibition rate;
[0132] Level 7: above 70% growth inhibition rate;
[0133] Level 6: above 60% growth inhibition rate;
[0134] Level 5: above 50% growth inhibition rate;
[0135] Level 4: above 40% growth inhibition rate;
[0136] Level 3: above 30% growth inhibition rate;
[0137] Level 2: above 20% growth inhibition rate;
[0138] Level 1: below 20% growth inhibition rate;
[0139] Level 0: no effect.
[0140] The above described growth inhibition rates are fresh weight inhibition rates.
[0141] Experiment of post-emergence test: monocotyledonous and dicotyledonous weed seeds as well as main crop seeds (i.e., wheat, corn, rice, soybean, cotton, oilseed rape, millet and sorghum) were put into a plastic pot loaded with soil, then covered with 0.5-2 cm of soil, and the seeds were allowed to grow in good greenhouse environment. The test plants were treated at 4-5 leaf stage 2-3 weeks after sowing. The test compounds of the invention were dissolved in acetone respectively, then added with Tween-80 and diluted by a certain amount of water to give solutions with certain concentrations. The solution was sprayed to the plants with a sprayer. The plants were cultured for 3 weeks in the greenhouse. The experiment results of weed controlling effect after 3 weeks were listed in Table 3 and Table 4.
TABLE-US-00004 TABLE 3 Experiment on weed control effect of compounds of Formula I in Post-emergence stage Compound Rorippa Amaranthus Veronica No. Chenopodiaceae indica retroflexus polita Dose 1 10 10 10 10 3000 g/ha 3 10 10 10 10 3000 g/ha 4 10 10 10 10 3000 g/ha 27 10 10 10 10 3000 g/ha 29 10 10 10 10 3000 g/ha 33 10 10 10 10 3000 g/ha 44 10 10 10 10 3000 g/ha 45 10 10 10 10 3000 g/ha 48 10 10 10 10 3000 g/ha 54 10 10 10 10 3000 g/ha 56 10 10 10 10 3000 g/ha 61 10 10 10 10 3000 g/ha 71 10 10 10 10 3000 g/ha 72 10 10 10 10 3000 g/ha 73 10 10 10 10 3000 g/ha 74 10 10 10 10 3000 g/ha 75 10 10 10 10 3000 g/ha 76 10 10 10 10 3000 g/ha 77 10 10 10 10 3000 g/ha 78 10 10 10 10 3000 g/ha 79 10 10 10 10 3000 g/ha 80 10 10 10 10 3000 g/ha 81 10 10 10 10 3000 g/ha 82 10 10 10 10 3000 g/ha 95 10 10 10 10 3000 g/ha 130 10 10 10 10 3000 g/ha
TABLE-US-00005 TABLE 4 Experiment on weed control effect of derivatives of Formula I-1 in Post-emergence stage (2000 g/ha) Compound Amaranthus Setaria Veronica No. retroflexus Chenopodiaceae viridis polita 1-1 10 10 10 10 1-2 10 10 10 10 1-3 10 10 10 10 1-4 10 10 10 10 1-5 10 10 10 10 1-6 10 10 10 10 1-7 10 10 10 10 1-8 10 10 10 10 1-9 10 10 10 10 1-10 10 10 10 10 1-11 10 10 10 10
[0142] Comparative Experiment:
[0143] The post-emergence test conditions were the same as above, and the results are shown in Table 5.
[0144] Control Compound A:
##STR00659##
Control Compound B:
[0145] ##STR00660##
TABLE-US-00006 TABLE 5 Results of comparison experiment Compound Echinochloa Setaria Digitaria Rorippa Veronica NO. crus-galli viridis sanguinalis indica polita Dose 1 8 10 7 10 10 300 g/ha 29 8 10 6 10 9 300 g/ha 33 N N N 10 10 300 g/ha 1-1 8 10 8 10 10 300 g/ha 1-2 8 10 10 10 10 300 g/ha 1-3 9 10 9 10 10 300 g/ha 1-11 9 9 7 10 10 300 g/ha Control 0 2 0 2 5 300 g/ha Compound A Control 0 2 0 3 5 300 g/ha Compound B Note: N means no data.
[0146] It can be seen from the above table, the compounds of the present invention have better herbicidal activity than the control compounds A and B.
[0147] Experiment of Pre-Emergence Test:
[0148] Seeds of monocotyledonous and dicotyledonous weeds and main crops (e.g. wheat, corn, rice, soybean, cotton, oilseed rape, millet and sorghum) were put into a plastic pot loaded with soil and covered with 0.5-2 cm of soil. The test compounds of the present invention was dissolved with acetone, then added with Tween-80, diluted by a certain amount of water to reach a certain concentration, and sprayed immediately after sowing. The obtained seeds were incubated for 4 weeks in the greenhouse after spraying. The test results were observed 3 weeks later. It was observed that the herbicides of the present invention mostly had excellent effect at dose of 250 g/ha, especially to weeds such as Echinochloa crusgalli, Digitaria sanguinalis and Abutilon theophrasti, etc., and many compounds had good selectivity for corn, wheat, rice, soybean, oilseed rape, etc.
[0149] It is found in the experiment that the compounds of the present invention generally have good weed control efficacy, especially for major weeds which are widely occurred in corn, rice and wheat fields, and have excellent commercial value. Above all, it is noted that the compound of the invention have extremely high activity to broadleaf weeds, which are resistant to ALS inhibitor.
[0150] Transplanted rice safety evaluation and weed control effect evaluation in rice field:
[0151] Rice field soil was loaded into a 1/1,000,000 ha pot. The seeds of Echinochloa crusgalli, Scirpus juncoides, Bidens tripartite and Sagittaria trifolia L. were sowed and gently covered with soil, then left to stand still in greenhouse in the state of 0.5-1 cm of water storage. The tuber of Sagittaria trifolia L. was planted in the next day or 2 days later. It was kept at 3-4 cm of water storage thereafter. The weeds were treated by dripping the WP or SC water diluents prepared according to the common preparation method of the compounds of the present invention with pipette homogeneously to achieve specified effective amount when Echinochloa crusgalli, Scirpus juncoides and Bidens tripartite reached 0.5 leaf stage and Sagittaria trifolia L. reached the time point of primary leaf stage.
[0152] In addition, the rice field soil that loaded into the 1/1,000,000 ha pot was leveled to keep water storage at 3-4 cm depth. The 3 leaf stage rice (japonica rice) was transplanted at 3 cm of transplanting depth the next day. The compound of the present invention was treated by the same way after 5 days of transplantation.
[0153] The fertility condition of Echinochloa crusgalli, Scirpus juncoides, Bidens tripartite and Sagittaria trifolia L. 14 days after the treatment of the compound of the invention and the fertility condition of rice 21 days after the treatment of the compound of the invention respectively with the naked eye. Evaluate the weed control effect with 1-10 activity standard level. It has been found that many of the compounds of the present invention have excellent activity and selectivity, especially for Sagittaria trifolia L. and Echinochloa crusgalli.
[0154] Note: The seeds of Echinochloa crusgalli, Scirpus juncoides, Sagittaria trifolia L. and Bidens tripartite were collected from Heilongjiang Province of China. Tests indicated that the weeds were resistant to common rate of pyrazosulfuron-ethyl.
[0155] At the same time, it is found after several tests that the compound and the composition of the present invention have good selectivity to many gramineae grasses such as Zoysia japonica, bermuda grass, tall fescue, bluegrass, ryegrass and seashore paspalum etc, and are able to control many important grass weeds and broadleaf weeds. The compounds also show excellent selectivity and commercial value in the tests on wheat, corn, rice, sugarcane, soybean, cotton, oil sunflower, potato, orchards and vegetables in different herbicide application methods.