methyl 6-(3,3-diethoxyprop-1-ynyl)-5-methyl-3-oxo-4-(3-(trifluoromethyl)phenyl)-3,4-dihydropyrazine-2-carboxylate 、
4-氰基苯肼盐酸盐 、
水 在
水 作用下,
以
甲醇 为溶剂,
反应 1.5h,
以to give methyl 6-(3-(2-(4-cyanophenyl)hydrazono)prop-1-ynyl)-5-methyl-3-oxo-4-(3-(trifluoromethyl)phenyl)-3,4-dihydropyrazine-2-carboxylate (1.18 g, 95%) as a yellow solid的产率得到methyl 6-(3-(2-(4-cyanophenyl)hydrazono)prop-1-ynyl)-5-methyl-3-oxo-4-(3-(trifluoromethyl)phenyl)-3,4-dihydropyrazine-2-carboxylate