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