Diimmonium salt (5) reacts with guanidines (6) and o-methylisoureas (7) affording 2-amino-4,5-dimorpholinoimidazolines (9). 1-Aryl-2-amino-4,5-dimorpholinoimidazolines lose the amino functionality under mild acidic conditions with formation of 2-amino-5-morpholinoimidazole derivatives (10) whereas 1-acyl derivatives undergo under the same conditions a ring expansion process leading to pyrimidine derivatives
二亚
铵盐(5)发生反应与
胍(6)和Ô -methylisoureas (7) ,得到2-
氨基-4,5-二dimorpholinoimidazolines (9) 。1-Aryl-2-amino-4,5-dimorpholinoimidazolines在温和的酸性条件下会失去
氨基官能团,形成2-amino-5-morpholinoimidazole衍
生物(10),而1-acyl衍
生物在相同条件下经历扩环过程,导致为
嘧啶衍
生物(13)。