Ethyl[2-cyano-2-[[4-(1-cyano-1-phenylethyl)phenyl]hydrazono]acetyl]carbamate   、                                                                                      
potassium acetate                                                                                                                                                              在
                                                                                                                                                                                 30   、                                                                                                  
水   、                                                                                                  
氯仿                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
溶剂黄146                                                                                  为溶剂,
                                                                                                                                                    反应 3.0h,
                                                                                                                以yielding 6.86 parts of 2-[4-(1-cyano-1-phenylethyl)phenyl]-2,3,4,5-tetrahydro-3,5-dioxo-1,2,4-triazine-6-carbonitrile as a residue (intermediate 65)的产率得到2-[4-(1-cyano-1-phenylethyl)phenyl]-2,3,4,5-tetrahydro-3,5-dioxo-1,2,4-triazine-6-carbonitrile