Fragmentation of Optically Active (1-Phenylethyl)- and (1-Naphthylethyl)ureas in Refluxing Alcohols: Easy Preparation of Optically Active Amines of High Optical Purity
作者:Bernhard Schönenberger、Arnold Brossi
DOI:10.1002/hlca.19860690620
日期:1986.9.10
(1-Phenylethyl)- and (1-naphthylethyl)ureas, obtained in the reaction of racemic amines with optically pure isocyanates, are separated and then decomposed in refluxing alcohols, to afford optically pure secondary amines and optically pure alkyl carbamates in quantitative yields. The scope of this fragmentation for the resolution of racemic mixtures of amines is illustrated by several examples of biologically
将在外消旋胺与旋光纯的异氰酸酯反应中获得的(1-苯乙基)-和(1-萘基乙基)脲分离,然后在回流的醇中分解,以定量收率得到旋光纯的仲胺和旋光的氨基甲酸烷基酯。用于拆分胺的外消旋混合物的这种裂解作用的范围由生物学上重要的化合物的几个例子说明。通过这种裂解获得的氨基甲酸酯可以容易地再循环。