N2-phenylamidine derivatives

摘要

The invention provides fungicidal compounds of formula (I) and salts thereof wherein: R¹ is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted, or hydrogen; R² and R³, which may be the same or different, are any group defined for R¹; cyano; acyl; -OR^a or -SR^a, where R^a is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted; or R² and R³, or R² and R¹, together with their interconnecting atoms may form a ring, which may be substituted; R⁴ is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted; hydroxy; mercapto; azido; nitro; halogen; cyano; acyl; optionally substituted amino; cyanato; thiocyanato; -SF₅; -OR^a; -SR^a or -Si(R^a)₃; m is 0 to 3; when present R⁵, which may be the same or different to any other R⁵, is any group defined for R⁴; R⁶ is optionally substituted carbo- or heterocylclyl; and A is a defined linking group, or -A-R⁶ and R⁵ together with benzene ring M form an optionally substituted fused ring system.