| 摘要 |
The invention relates to a method for producing 3-difluoromethyl-substituted pyrazole compounds of formula (I), wherein Rrepresents H, halogen, nitro, C-Calkyl, C-Chaloalkyl, C-Ccycloalkyl, phenyl, naphthyl, hetaryl, cyano,-C(=O)-OR,-C(=O)-NRR,-C(=O)-SRor-C(=S)-SR; Rrepresents H, C-Calkyl, benzyl or phenyl; Rrepresents H, halogen, C-Calkoxy, C-Chaloalkoxy, C-Ccycloalkoxy, C-Calkenyloxy, C-Calkylthio, C-Chaloalkylthio, C-Ccycloalkylthio or C-Calkenylthio; to compounds of formula (II.a) or (II.b), wherein Rand Rhave one of the above definitions; Rrepresents halogen,-OR,-SR,-O-SO-Ror a group-NRR; Rand Rrepresent C-Calkyl, C-Chaloalkyl, C-Ccycloalkyl, benzyl or phenyl or together with the nitrogen atom to which they are bound represent a 3-to 8-membered heterocycle; to Lewis acid adducts of compounds of formula (II.b); to the use of compounds of formula (II.a) or (II.b) and of the Lewis acid adducts thereof for producing compounds of formula (I) or (VI); and to a method for converting said compounds to the corresponding 3-difluoromethylpyrazole-4-yl carboxylic acids.
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