| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a method for regioselective synthesis of 1-alkyl-3-halogenalkylpyrazole-4-carboxylic acid derivatives through cyclisation of 2,3-disubstituted acrylic acid derivatives with hydrazines in the presence of carbonyl compounds.EFFECT: high regioselectivity of synthesis.6 cl, 2 ex |
