ethyl 2-[(5-hydrazido-2-hydrazino-4-methylthiophene-3-carbonyl)amino]-5,5-dimethyl-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 在
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 6.0h,
以49%的产率得到ethyl 2-(5-hydrazido-4-methyl-3-oxo-1,3-dihydrothieno[2,3-c]pyrazol-2-yl)-5,5-dimethyl-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate