Hetero-aryl-di:carboxylic acid amide derivs.

摘要

Dicarboxylic acid imides of formula (I) and their salts tolerated by plants, excepting 3-methyl-isoxazole-4,5-dicarboximide and thiazole-4,5-dicarboxylic acid imide in which R2 = Ph if R1 = Me or 2-thiazolyl a, b and c complete an aromatic ring and represent either (i) CHR1, N and X, (ii) CHR1, X and N or (iii) N, CHR1 and X respectively X = O or S; R1 = H, halogen, CN, 1-6C alkyl (opt. contg. 1-5 halogen and/or 1 or 2 of the following: 3-6C cyclo-alkyl, 1-4C alkoxy, 1-4C haloalkoxy, 1-4C alkylthio, 1-4C haloalkylthio, 1-4C alkyl-sulphonyl, 1-4C haloalkyl sulphonyl or CN), 3-8C cycloalkyl (opt. mono, di or tri substd. by 1-4C alkyl or halogen), 2-6C alkenyl, 2-6C alkynyl (these last 2 opt. mono, di or trisubstd. by halogen, 1-3C alkoxy and or Ph, which is itself mono, di or tri substd. by 1-4C alkyl, 1-4C haloalkyl, etc. PhO or PhS opt. substd., a 5 or 6-membered satd. or aromatic heterocyclic gp. (contg. 1 or 2 O, S or N heteroatoms, and the ring being opt. mono or di substd. ) or a condensed aromatic ring chosen from benzofuran-2 or 3-yl, isobenzofuran-2-yl, benzothiophen-2- or 3-yl isobenzothiophen-2-yl, indol-2 or 3-yl, , etc. (each opt. mono or di substd. substd. R2 = H, OH, 1-4C alkoxy, 1-6C alkyl (opt. --3-8C cycloalkyl (opt. mono, di or tri substd. by 1-6C alkyl, CN, etc. 3-6C alkenyl, 3-6C alkynyl (these opt. mono- di- or tri-substd. by halogen and/or mono-substd. by Ph, itself opt. or by formyl, Ph, 1-4C alkanoyl, 1-4C haloalkanyl