5-methyl-4-nitro-2-(2,2,2-trifluoroethyl)-2H-pyrazole-3-carboxylic acid 、
五氯化磷 反应 2.5h,
以to give 20 g of 1-(2,2,2-trifluoroethyl-3-methyl-4-nitropyrazole-5-carbonyl chloride as an oil的产率得到2,2,2-Trifluoroethyl-3-methyl-4-nitropyrazole-5-carbonyl chloride