Zeneca Limited

Nhan H Nguyen

Hsiao-Ling M Chin

David B Kanne

Yi-Qiu Wei

David L Lee

Michael P Ensminger

Derek P Dagarin

Yi Q Wei

Linda Willitts

Herbicidal 3-substituted pyridine compounds and derivatives thereof of the formula: ##STR1## wherein Ar is a substituted or unsubstituted 5- or 6-membered heteroaryl group having 1, 2 or 3 ring nitrogen atoms with the remainder of the ring atoms being carbon; a substituted or unsubstituted 5-membered heteroaryl group having a ring heteroatom of oxygen or sulfur with the remainder of the ring atoms being carbon; or a substituted or unsubstituted 5-membered heteroaryl group having one ring nitrogen atom and either an oxygen or sulfur ring heteroatom with the remainder of the ring atoms being carbon. Herbicidal compositions containing such 3-substituted pyridine compounds and derivatives thereof and methods of controlling undesirable vegetation employing these compounds and derivatives are also disclosed. The compounds in which XR is hydroxyl are also useful as intermediates for producing the disclosed 3-substituted pyridine derivatives.

3-substituted pyridine compounds and derivatives thereof

Herbicidal substituted hydroxybenzyl-heteroaryl compounds and derivatives thereof of the formula ##STR1## wherein Ar is a substituted or unsubstituted 5- or 6-membered heteroaryl group having 2 or 3 ring nitrogen atoms or a substituted or unsubstituted 5-membered heteroaryl group having two ring heteroatoms, one of the ring heteroatoms being nitrogen and the other being sulfur or oxygen. Herbicidal compositions containing such substituted hydroxybenzyl-heteroaryl compounds and derivatives thereof and methods of controlling undesirable vegetation employing these compounds and derivatives are also disclosed. The compounds in which XR is hydroxyl are also useful as intermediates for producing the disclosed substituted hydroxybenzyl-heteroaryl derivatives.

Herbicidal hydroxybenzyl-substituted heteroaryl compounds and

4-substituted pyridyl-3-carbinols of the formula ##STR1## wherein R is hydrogen, or an acyl, alkyl or carbamyl group exhibit desirable preemergent and postemergent herbicidal activity. Also disclosed are herbicidal compositions comprising such compounds and methods of controlling undesirable vegetation employing such compounds. The compounds wherein AR is hydroxyl serve as useful intermediates for the production of the alpha-benzyl substituted compounds as well as exhibiting herbicidal activity.

4-substituted pyridyl-3-carbinol compositions and a co-herbicide

4-substituted pyridyl-3-carbinols of the formula ##STR1## wherein R is hydrogen, or an acyl, alkyl or carbamyl group exhibit desirable preemergent and postemergent herbicidal activity. Also disclosed are herbicidal compositions comprising such compounds and; a method of controlling undesirable vegetation employing such compounds. The compounds wherein AR is hydroxyl serve as useful intermediates for the production of the alpha-benzyl substituted compounds as well as exhibiting herbicidal activity.

Growing community of inventors

Richmond, CA, United States of America

Nhan H Nguyen