Achieving functional group diversity in parallel synthesis: solution-phase synthesis of a library of ureas, carbamates, thiocarbamates, and amides using carbamoylimidazolium salts
作者:Justyna A. Grzyb、Robert A. Batey
DOI:10.1016/j.tetlet.2008.06.096
日期:2008.9
A convenient protocol for the parallel solution-phase synthesis of a library of thiocarbamates, ureas, carbamates, and amides from carbamoylimidazolium salts has been developed. The crystalline carbamoylimidazolium salts are readily synthesized from secondary amines, CDI and iodomethane, and act as stable carbamoylation reagents. A common set of reaction conditions and a straightforward non-chromatographic
已经开发了一种方便的方案,用于从氨基甲酰咪唑鎓盐中并行溶液相合成硫代氨基甲酸酯,脲,氨基甲酸酯和酰胺的库。结晶的氨基甲酰咪唑鎓盐很容易由仲胺,CDI和碘甲烷合成,并用作稳定的氨基甲酰化试剂。针对与硫醇,胺,酚和羧酸的反应,开发了一套通用的反应条件和一种简单的非色谱液-液萃取纯化方案,可提供高纯度和高收率的产品。最终的文库结合了多样性,这些多样性源于对反应伙伴的选择以及在偶联反应中产生的官能团的连接。