Patent classifications
C07C49/487
METHOD FOR PRODUCING CYCLIC DIKETONE COMPOUND
Provided is a method for producing a compound represented by general formula (I) by oxidative cleavage of a compound of formula (II), which is a bicyclic tetrasubstituted olefin compound, using hydrogen peroxide. The method for producing a compound represented by general formula (I) includes a step of subjecting a compound represented by general formula (II) to oxidative cleavage using hydrogen peroxide in the presence of an acid catalyst or in the presence of a tungstic acid compound to obtain the compound represented by general formula (I):
##STR00001##
[In the formulae, formula -A.sup.1- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 2 to 6 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these, and formula -A.sup.2- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 4 to 10 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these.]
METHOD FOR PRODUCING CYCLIC DIKETONE COMPOUND
Provided is a method for producing a compound represented by general formula (I) by oxidative cleavage of a compound of formula (II), which is a bicyclic tetrasubstituted olefin compound, using hydrogen peroxide. The method for producing a compound represented by general formula (I) includes a step of subjecting a compound represented by general formula (II) to oxidative cleavage using hydrogen peroxide in the presence of an acid catalyst or in the presence of a tungstic acid compound to obtain the compound represented by general formula (I):
##STR00001##
[In the formulae, formula -A.sup.1- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 2 to 6 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these, and formula -A.sup.2- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 4 to 10 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these.]
Preparation of 14-methyl-16-oxabicyclo[10.3.1]pentadecenes from 3-methyl-1,5-cyclopentadecanedione
The present invention relates to a method for preparing 14-methyl-16-oxabicyclo-[10.3.1]pentadecenesin a two-step synthesis from 3-methyl-1,5-cyclopentadecane-dione as starting material.
Preparation of 14-methyl-16-oxabicyclo[10.3.1]pentadecenes from 3-methyl-1,5-cyclopentadecanedione
The present invention relates to a method for preparing 14-methyl-16-oxabicyclo-[10.3.1]pentadecenesin a two-step synthesis from 3-methyl-1,5-cyclopentadecane-dione as starting material.
PREPARATION OF 14-METHYL-16-OXABICYCLO[10.3.1]PENTADECENES FROM 3-METHYL-1,5-CYCLOPENTADECANEDIONE
The present invention relates to a method for preparing 14-methyl-16-oxabicyclo-[10.3.1]pentadecenes in a two-step synthesis from 3-methyl-1,5-cyclopentadecane-dione as starting material.
PREPARATION OF 14-METHYL-16-OXABICYCLO[10.3.1]PENTADECENES FROM 3-METHYL-1,5-CYCLOPENTADECANEDIONE
The present invention relates to a method for preparing 14-methyl-16-oxabicyclo-[10.3.1]pentadecenes in a two-step synthesis from 3-methyl-1,5-cyclopentadecane-dione as starting material.
Method for producing cyclic diketone compound
Provided is a method for producing a compound represented by general formula (I) by oxidative cleavage of a compound of formula (II), which is a bicyclic tetrasubstituted olefin compound, using hydrogen peroxide. The method for producing a compound represented by general formula (I) includes a step of subjecting a compound represented by general formula (II) to oxidative cleavage using hydrogen peroxide in the presence of an acid catalyst or in the presence of a tungstic acid compound to obtain the compound represented by general formula (I): ##STR00001##
[In the formulae, formula -A.sup.1- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 2 to 6 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these, and formula -A.sup.2- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 4 to 10 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these.]
Method for producing cyclic diketone compound
Provided is a method for producing a compound represented by general formula (I) by oxidative cleavage of a compound of formula (II), which is a bicyclic tetrasubstituted olefin compound, using hydrogen peroxide. The method for producing a compound represented by general formula (I) includes a step of subjecting a compound represented by general formula (II) to oxidative cleavage using hydrogen peroxide in the presence of an acid catalyst or in the presence of a tungstic acid compound to obtain the compound represented by general formula (I): ##STR00001##
[In the formulae, formula -A.sup.1- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 2 to 6 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these, and formula -A.sup.2- (where the front bond denotes a bond that bonds with a carbon atom C.sup.1 while the back bond denotes a bond that bonds with a carbon atom C.sup.2) is an alkylene group having 4 to 10 carbon atoms that may have been substituted and that may further include an ether bond, an ester bond, a secondary amino group, a thioether group, or these.]