1-[(2-Methyl-4-amino-5-pyrimidinyl) methyl]-3-alkyl-4-(2-hydroxyethyl)-5-methylimidazolium salts reacted with diethyl benzoylphosphonate after treatment with triethylamine to give O-benzoate. However, the treatment with dimethylsulfinyl carbanion in dimethylsulfoxide gave iminochrome type compounds (VI, XIX), imidazole (XXVI), and azomethine compounds (VII, XX, XXVIII). The difference of lability between imidazolium and thiazolium C-2 protons was shown by NMR measurements.
1-[(2- 甲基-4-
氨基-5-
嘧啶基)甲基]-3-烷基-4-(2-羟乙基)-5-甲基
咪唑鎓盐在用
三乙胺处理后与
苯甲酰膦酸二乙酯反应,生成 O-
苯甲酸酯。然而,在
二甲基亚砜中用二甲基亚磺酰基碳酰离子进行处理,则可得到亚
氨基
铬型化合物(VI、XIX)、
咪唑(XXVI)和偶氮甲基化合物(VII、XX、XXVIII)。核磁共振测量显示了
咪唑鎓和
噻唑鎓 C-2 质子之间的易变性差异。