A Facile and Efficient Method for the Formation of Unsymmetrical Ureas Using DABAL-Me3
作者:Byung-Hoon Jeong、Hee-Kwon Kim、David H. Thompson
DOI:10.1071/ch15675
日期:——
A practical synthetic method for the formation of unsymmetrical-substituted ureas is described. The synthesis of the unsymmetrical ureas was readily performed from 2,2,2-trichloroethyl carbamate compounds by treatment of amines with bis(trimethylaluminum)-1,4-diazabicyclo[2.2.2]octane (DABAL-Me3). Using this reaction protocol, various trisubstituted and tetrasubstituted ureas were synthesized in high
描述了一种用于形成不对称取代的脲的实用合成方法。通过用双(三甲基铝)-1,4-二氮杂双环[2.2.2]辛烷(DABAL-Me 3)处理胺,可以轻松地从2,2,2-三氯乙基氨基甲酸酯化合物合成不对称脲。使用该反应方案,高产率地合成了各种三取代和四取代的脲。这项研究提供了一种从2,2,2-三氯乙基氨基甲酸酯轻松合成各种不对称脲的有前途的方法。