A new highly selective synthesis of amides and carbamates is described. In both cases the syntheses involve the formation of carbonyl imidazole intermediates which subsequently undergo previously unreported selective reactions with primary amines. Acid imidazolides with sufficient chain length will exclusively react with primary amines even in the presence of secondary and tertiary functionality. The
描述了酰胺和
氨基甲酸酯的新的高选择性合成。在两种情况下,合成都涉及形成羰基
咪唑中间体,该中间体随后与
伯胺进行先前未报道的选择性反应。即使在存在仲和叔官能度的情况下,具有足够链长的酸
咪唑啉化物也将仅与
伯胺反应。仲或叔醇的
咪唑羧酸酯还与
伯胺选择性反应,形成受控的
氨基甲酸酯结构。