methyl 3-oxo-2-[[3-(trifluoromethyl)phenyl]hydrazinylidene]pentanoate 、
N,N-二甲基甲酰胺二甲基缩醛 在
hexanes 作用下,
反应 2.5h,
以to give methyl 5-methyl-4-oxo-1-[3-(trifluoromethyl)phenyl]-1,4-dihydropyridazine-3-carboxylate (3.55 g, 87%) as a pale yellow solid的产率得到methyl 5-methyl-4-oxo-1-[3-(trifluoromethyl)phenyl]-1,4-dihydropyridazine-3-carboxylate