Azidomethyl 4-Nitrophenyl Carbonate - A Reagent for the One-Step Introduction of the Azidomethyloxycarbonyl (Azoc) Protecting Group
作者:Clemens Richert、Andreas Kaiser
DOI:10.1055/s-0030-1258049
日期:2010.9
Presented here is the three-step synthesis of azidomethyl 4-nitrophenyl carbonate in 58% overall yield. This carbonate allows for the high-yielding (³90%) introduction of the phosphine-labile azidomethyloxycarbonyl (Azoc) protecting group in one step. The reagent protects a range of amines, including amino acids. For nonionic substrates, pure carbamates are obtained after extractive workup.
下面介绍了一种总体产率为58%的叠氮甲基4-硝基苯基碳酸酯的三步合成方法。此碳酸酯可在一步操作中高产率(³90%)引入对膦敏感的叠氮甲氧羰基(Azoc)保护基团。该试剂可保护包括氨基酸在内的一系列胺类底物。对于非离子型底物,经萃取后处理可得到纯净的氨基甲酸酯。