Unsymmetrical tetrasubstituted ureas from tertiary carbamoylimidazole: activation by AlMe3
作者:A. Velavan、S. Sumathi、K. K. Balasubramanian
DOI:10.1039/c2ob25412c
日期:——
An efficient and general method for the synthesis of unsymmetrical tetrasubstituted ureas from carbamoylimidazole is described. The conversion is achieved by the concurrent quarternization of the imidazole nitrogen and activation of amines with AlMe3.
描述了一种由氨基甲酰咪唑合成不对称四取代脲的有效且通用的方法。通过同时使咪唑氮季铵化并用AlMe 3活化胺来实现转化。