isocyanates and sodium hydride as the reagents. In addition, the method involves no expensive metal complexes or catalysts and all reactions are carried out at room temperature. Furthermore, both symmetrical and asymmetrical ureas were successfully obtained in single step reactions with reasonable yields.
该报告描述了使用交叉偶联方法合成N,N'-取代的
脲的前所未有的方案。单价取代的
脲通过经济上可行且简单的方法,使用市售的
异氰酸酯和氢化
钠作为试剂进行改性。另外,该方法不涉及昂贵的
金属络合物或催化剂,并且所有反应均在室温下进行。此外,对称和不对称
脲都可以在一步反应中以合理的收率成功获得。