Heterocyclic compounds

US5426090A · kind A · utility

Assignee

• Shell Research Limited · GB

Inventors

• Alastair McArthur
• Trevor William Newton · Neustadt, DE

Key dates

• Filing date: Jul 12, 1993
• Grant date: Jun 20, 1995
• Expiry date: Jul 12, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D239/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method of combating undesired plant growth in wheat, comprising treating said undesired plant growth with an effective amount of a compound of the formula I ##STR1## in which n is an integer from 1 to 6; PA1 m is an integer from 0 to 2n+2; PA1 X represents an oxygen or sulphur atom or a sulphinyl or sulphonyl group; PA1 R.sup.1, R.sup.2 and R.sup.3 each independently represents a hydrogen or halogen atom, a formyl, cyano, carboxy or azido group, or an optionally substituted C.sub.1-12 alkyl, C.sub.2-12 alkenyl, C.sub.2-12 alkynyl, C.sub.1-12 alkoxy, C.sub.2-12 alkenyloxy, C.sub.2-12 alkynyloxy, C.sub.1-12 alkylthio, C.sub.2-12 alkenylthio, C.sub.2-12 alkynylthio, C.sub.1-12 alkylcarbonyl, C.sub.1-12 alkoxycarbonyl, amino, aminoxy or di-C.sub.1-12 alkyliminoxy group; PA1 Z represents a hydrogen or halogen atom, a hydroxy group, an optionally substituted C.sub.1-12 alkoxy, C.sub.2-12 alkenyloxy, C.sub.2-12 alkynyloxy, (C.sub.3-8 cycloalkyl)oxy, phenyloxy, C.sub.1-12 alkylthio, C.sub.2-12 alkenylthio, C.sub.2-12 alkynylthio, phenylthio, sulphonamido, aminoxy or di-C.sub.1-12 alkyliminoxy group; and PA1 Y represents a halogen atom, a cyano or carboxy group, or an optionally substitut…