二乙基偶氮二羧酸酯   、                                                                                      1,2,3,4-tetrahydro-1,3-dimethyl-2,4-dioxo-6-<(triphenylphosphoranylidene)amino>pyrimidine                                                                                                                                                                                              以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 6.0h,
                                                                                                                以91.9%的产率得到diethyl 1,2,3,4,5,6-hexahydro-4-methyl-3,5-dioxo-6-<(N-methylamino)-(N-(triphenylphosphoranylidene)amino)-methylene>-1,2,4-triazine-1,2-dicarboxylate