3-hydroxy-2-[(1-methyl-3-trifluoromethyl-1H-pyrazole-4-carbonyl)-amino]-pent-4-enoic acid ethyl ester 、
甲胺 在
丙酮 作用下,
以
甲醇 为溶剂,
反应 17.0h,
以The precipitate gave 0.65 g of erythro title compound as a colorless powder的产率得到N-(2-hydroxy-1-methylcarbamoylbut-3-enyl)-1-methyl-3-trifluoromethyl-1H-pyrazole-4-carboxamide