Inventors:
John E. D. Barton - Reading, GB
David Cartwright - Reading, GB
John M Cox - Wokingham, GB
Glynn Mitchell - Iver, GB
Charles G. Carter - Silver Spring MA
David L Lee - Martinez CA
Francis H Walker - Mill Valley CA
Frank X. Woolard - Pt. Richmond CA
International Classification:
C07D26354, A01N 4392
Abstract:
A compound of formula (I): ##STR1## or a salt, enamine or the like, acylate, sulphonate, carbamate or ether derivative thereof; wherein X, X. sup. 1 and X. sup. 2 are independently oxygen or sulphur, R. sup. 1 is an optionally substituted heterocyclic or cycloalkyl group, and Y is an optionally substituted C. sub. 2 -C. sub. 4 alkylene group which is optionally interposed by an oxygen atom, a group ##STR2## a group ##STR3## or an optionally mono-substituted nitrogen atom, wherein p is 0, 1 or 2, s is 0 or 1 and R. sup. b is alkyl or alkoxy; provided that when X, X. sup. 1 and X. sup. 2 are oxygen, R. sup. 1 is not pyridyl or pyrimidinyl. Processes for the preparation of these compounds and herbicidal compositions containing them are also described and claimed.