2-[4-(1,3-dihydroxy-4,4,5,5-tetramethyl-1,3-imidazolidin-2-yl)phenyl]-1,3-dimethyl-5-phenyl-6-oxo-6H-1-pyrimidinium-4-olate 在
lead dioxide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 72.0h,
以54%的产率得到2-[4-(1,3-dimethyl-4-oxido-5-phenyl-6-oxo-6H-1-pyrimidinium-4-oxido)phenyl]-4,5-dihydro-4,4,5,5-tetramethyl-3-oxido-3-imidazolo-1-oxyl