Efficient Cs2CO3-promoted solution and solid phase synthesis of carbonates and carbamates in the presence of TBAI
作者:Ralph N Salvatore、Feixia Chu、Advait S Nagle、Elona A Kapxhiu、Richard M Cross、Kyung Woon Jung
DOI:10.1016/s0040-4020(02)00286-7
日期:2002.4
Novel solution and solid-phase methods for the synthesis of carbonates and carbamates were developed using cesium bases and TBAI via a three-component coupling. Cesium carbonate not only promoted successful carbonylations of alcohols and carbamations of amines, but also suppressed common side reactions traditionally seen using existing protocols. Various alcohols and amines were examined, using a wide
利用铯碱和TBAI,通过三组分偶联,开发了用于合成碳酸盐和氨基甲酸酯的新型溶液和固相方法。碳酸铯不仅可以促进醇的成功羰基化和胺的氨基甲酸酯化,而且还可以抑制传统上使用现有方案观察到的常见副反应。使用各种各样的烷基卤化物检查了各种醇和胺,结果表明该方法具有高度的化学选择性。特别地,使用对空间有要求的底物或氨基酸衍生物只能提供相应的产物,从而提供了广泛的应用,例如新颖的保护基和拟肽合成。