Using DMSO as solvent, a mild and efficient procedure for the synthesis of unsymmetrical N,N'-disubstituted ureas from phenyl carbamates is described. The carbamates are treated with a stoichiometric amount of amine at ambient temperature, generating the ureas in high yield and high purity. The reaction is mild, fast, and easily scaled up.
使用
DMSO作为溶剂,描述了一种温和且高效的合成不对称N,N'-二取代
脲的方法,该方法以
苯基氨基甲酸酯为原料。在常温下,
氨基化合物与一定比例的
氨基化合物反应,生成高产率和高纯度的
脲。该反应温和、快速且易于放大。