EP0634413A1 — Herbicides

USPTO Abstract

The invention provides compounds of formula:    wherein R and R¹ independently represent hydrogen, optionally halogenated alkyl alkenyl or alkynyl; -(-CR³R⁴) n -(optionally subtituted phenyl); -(-CR³R⁴) n Het; or -(-CR³R⁴) n -Ar, wherein Ar is an optionally substituted bicycle;    wherein at least one of the groups R and R¹ represents -(-CR³R⁴) n -Ar;    R² represents R⁵ or optionally substituted phenyl;    X is oxygen or sulphur; m is 0, 1, 2 or 3;    R³ and R⁴, independently represent hydrogen, alkyl or haloalkyl;    R⁵ is halogen, optionally halogenated alkyl, alkenyl or alkynyl; or a group selected from cyano, nitro, -CO₂R⁶, -S(O) p R⁶, -NR³R⁴, -COR⁶, -S(O) p R⁷, -CO₂R⁷, -OR⁷, -CONR³R⁴, -OSO₂R⁷, -OSO₂R⁸, -OCH₂R⁷, -N(R³)COR⁸, -N(R³)SO₂R⁸, -N(R³)SO₂R⁷, -SO₂NR³R⁴, -Si(R⁸)₃ and -OR⁶;    n is zero, 1 or 2; q is zero or an integer from 1 to 5;    Het represents an optionally substituted heterocycle;    R⁶ represents hydrogen, alkyl or haloalkyl;    p is zero, one or two; r is one or two;    R⁷ represents optionally substituted phenyl;    R⁸ represents alkyl or haloalkyl;    R⁶¹ and R⁶² independently represent hydrogen, halogen, alkyl or haloalkyl;    and agriculturally acceptable salts thereof;    which possess utility as herbicides.