3-(p-methoxyphenyl)-4-ethoxycarbonyl-5-hydroxy-5-methyl-2-carboxanilide-cyclohexan-1-one   、                                                                                      
苯肼                                                                                                                                                              在
                                                                                                                                                                                 
sodium acetate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                    反应 6.0h,
                                                                                                                以92%的产率得到4-(4-Methoxy-phenyl)-6-methyl-3-oxo-2-phenyl-3,3a,4,5-tetrahydro-2H-indazole-5-carboxylic acid ethyl ester