1,3-dimethyl-2,4,6-trioxo-5-pyridinomethyl-1,3-perhydrodiazin-5-yl-pyridinium ylide 、
1,2-双(二苯基膦)乙烷 以
二氯甲烷 为溶剂,
以80%的产率得到1,3-dimethyl-5-{[{2-[[(1-methyl-6-oxido-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl) methyl](diphenyl)phosphonio] ethyl}(diphenyl)phosphonio]methyl}-2,6-dioxo-1,2,3,6-tetrahydro-4-pyrimidinolate