Process for producing N - isopropilhetero - arilacetanilidas comprising Transforms heteroarenos with N - isopropyl - hidroxiacetico acid anilides, given the case in the presence of a Solvent,A Catalyst and an Acid acceptor.

摘要

Herbicidal N-isopropylheteroaryloxyacetanilides of the formula IMAGE (I) in which A stands for nitrogen or the group C-R3 where R3 stands for halogen, cyano, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkylthio, alkylsulphinyl or alkylsulphonyl, B stands for nitrogen or the group C-R4 where R4 stands for halogen, cyano, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, halogenoalkylthio, alkylsulphinyl, halogenoalkylsulphinyl, alkylsulphonyl, halogenoalkylsulphonyl, for phenyl which is optionally substituted by halogen, alkyl, halogenoalkyl, alkoxy or halogenoalkoxy, or for the group -CY2-Z-R5 where R5 stands for alkyl, which is optionally substituted by halogen, alkoxy or alkylthio, or for phenyl which is optionally substituted by halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio or halogenoalkylthio, Y stands for hydrogen or halogen, Z stands for oxygen, sulphur, SO or SO2, R1 stands for hydrogen, halogen, cyano, nitro, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio or halogenoalkylthio, R2 stands for hydrogen, halogen, alkyl, halogenoalkyl or alkoxy and X stands for oxygen or sulphur, excluding the compound N-isopropyl-(5-trifluoromethyl-1,3,4-thiadiazol-2-yl)-oxyacetanilide.