作者: Janis Jaunzems , Max Josef Braun
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摘要: Process for the manufacture of an ester or respective free acid a 1-substituted-3-fluoroalkyl-pyrazole-4-carboxylic formula (I) wherein - Y is H, F alkyl group having from 1 to 12 carbon atoms which optionally substituted by at least one halogen atom, aralkyl aryl group, R1 H organic residue, R2 comprises submitting compound (II) as defined above X CI, Br I, reduction reaction.