The invention relates to pyrrolone compounds of the formula (I) wherein R.sup.1, R.sup.2, R.sup.3, R.sup.b, R.sup.c and R.sup.d are as defined in the specification. Furthermore, the present invention relates to processes and intermediates for making compounds of formula (I), to herbicidal compositions comprising these compounds and to methods of using these compounds to control plant growth. ##STR00001##

The invention relates to pyrrolone compounds of the formula (I) wherein R.sup.1, R.sup.2, R.sup.3, R.sup.b, R.sup.c and R.sup.d are as defined in the specification. Furthermore, the present invention relates to processes and intermediates for making compounds of formula (I), to herbicidal compositions comprising these compounds and to methods of using these compounds to control plant growth. ##STR00001##

The present invention relates to compounds of Formula (I), wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and G are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I), to their use for controlling weeds, in particular in crops of useful plants.

##STR00001##

The present invention relates to compounds of Formula (I), wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and G are as defined herein. The invention further relates to herbicidal compositions which comprise a compound of Formula (I), to their use for controlling weeds, in particular in crops of useful plants.

##STR00001##

A compound of formula (Ie′): ##STR00001##
wherein Ar′, R.sub.1, R.sub.4e and Y are as defined herein and a method of controlling pests using the compound.

A compound of formula (Ie′): ##STR00001##
wherein Ar′, R.sub.1, R.sub.4e and Y are as defined herein and a method of controlling pests using the compound.

Compounds of Formula I: ##STR00001##
are HIV reverse transcriptase inhibitors, wherein R.sup.1, R.sup.2, R.sup.E, L, M and Z are defined herein. The compounds of Formula I and their pharmaceutically acceptable salts are useful in the inhibition of HIV reverse transcriptase, the prophylaxis and treatment of infection by HIV and in the prophylaxis, delay in the onset or progression, and treatment of AIDS. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.

Disclosed is a substituted pyrimidine compound having a structure as represented by formula PY. ##STR00001## See the description for the definition of each substituent in the formula. The compound of the present invention provides broad-spectrum bactericidal, pesticidal, and acaricidal activities, provides great control effects against plant diseases such as cucumber downy mildew, corn rust, wheat powdery mildew, rice blast, and cucumber gray mold, specifically provides improved control effects against cucumber downy mildew, corn rust, wheat powdery mildew, and rice blast, provides great control effects against aphid, carmine spider mite, diamondback moth, and armyworm, and acquires great effects at a minimal dosage. The compound of the present invention also provides characteristics such as a simplified preparation method.

Disclosed is a substituted pyrimidine compound having a structure as represented by formula PY. ##STR00001## See the description for the definition of each substituent in the formula. The compound of the present invention provides broad-spectrum bactericidal, pesticidal, and acaricidal activities, provides great control effects against plant diseases such as cucumber downy mildew, corn rust, wheat powdery mildew, rice blast, and cucumber gray mold, specifically provides improved control effects against cucumber downy mildew, corn rust, wheat powdery mildew, and rice blast, provides great control effects against aphid, carmine spider mite, diamondback moth, and armyworm, and acquires great effects at a minimal dosage. The compound of the present invention also provides characteristics such as a simplified preparation method.

The present invention relates to a compound of formula (I): wherein the substituents are as defined herein, and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof. ##STR00001##