Abstract: 4-Aminopicolinic acids having tri- and tetra-substituted aryl substituents in the 6-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.

Abstract: 6-Amino-5-halo-4-pyrimidinecarboxylic acids having poly-substituted aryl substituents in the 2-position, and their amine and acid derivatives, are potent herbicides demonstrating a broad spectrum of weed control.

Abstract: 1-Alkyl-4-benzoyl-5-hydroxypyrazole compounds in which the benzoyl moiety is substituted in the 2-position with a halo, alkyl, or alkoxy group, in the 4-position with an alkylsulfonyl group, and in the 3-position with an optionally substituted phenyl group, for example, 1-(1,1-dimethylethyl)-4-(2-methyl-4-methyl-sulfonyl-3-(4-methoxyphenyl)benzoyl-5-hydroxypyrazole, were prepared and found to be useful for the control of a variety of broadleaf and grassy weeds. The compounds can be applied either preemergently or postemergently and can be used to control undesirable vegetation selectively in small grain crops and turf or non-selectively.

Abstract: 1-Halo-2-chloro-3-alkoxy-4-alkylsulfonylbenzene and 1-halo-2,3-dichloro-4-alkylsulfonylbenzene compounds were converted to compounds having hydroxycarbonyl or alkoxycarbonyl substituents in place of the 1-halo substituent by reaction with carbon monoxide and water or an alcohol respectively, in the presence of a palladium II salt: trihydrocarbylphosphine complex type catalyst.

Abstract: Herbicidal 1-alkyl-4-(2-chloro-3-alkoxy-4-alkylsulfonylbenzoyl)-5-hydroxypyrazole compounds, as well as 1-halo-2-chloro-3-alkoxy-4-alkylsulfonylbenzene compounds and 2-chloro-3-alkoxy-4-alkylsulfonylbenzoic acid compounds, were prepared in good yield by the reaction of the corresponding 3-chloro compound with an alkali metal alkoxide compound. 1-Halo-2-chloro-3-alkoxy-4-alkylsulfonylbenzene and 1-halo-2,3-dichloro-4-alkylsulfonylbenzene compounds were converted to compounds having hydroxycarbonyl, alkoxycarbonyl, or 1-alkyl-5-hydroxypyrazole-4-carbonyl substituents in place of the 1-halo substituent by reaction with carbon monoxide and water, an alcohol, or a 1-alkyl-5-hydroxypyrazole compound, respectively, in the presence of a palladium II salt:trihydrocarbylphosphine complex type catalyst.

Abstract: 1-Alkyl-4-benzoyl-5-hydroxypyrazole compounds in which the benzoyl moiety is substituted in the 2-position with a halo, alkyl, or alkoxy group, in the 4-position with an alkylsulfonyl group, and in the 3-position with an optionally substituted phenyl group, for example, 1-(1,1-dimethylethyl)-4-(2-methyl-4-methylsulfonyl-3-(4-methoxyphenyl)benz oyl-5-hydroxypyrazole, were prepared and found to be useful for the control of a variety of broadleaf and grassy weeds. The compounds can be applied either preemergently or postemergently and can be used to control undesirable vegetation selectively in small grain crops and turf or non-selectively.

Abstract: 3-Thiocyano-2-halo-2-propenenitriles are prepared which correspond to the formula: ##STR1## wherein X is a halogen. These compounds have been found to exhibit a high degree of antimicrobial activity in industrial and commercial applications and compositions containing these compounds are so employed.