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