A mild and catalytic decarboxylation of α-iminoacids by tributyl phosphine
作者:Derek H.R. Barton、Frédéric Taran
DOI:10.1016/s0040-4039(98)00955-1
日期:1998.7
α-Iminoacids, prepared from α-ketoacids and primary amines, undergo decarboxylation to the corresponding imines by reaction with a catalytic amount of tributylphosphine. No reaction has been observed with α-ketoacids or their phenyl-hydrazone, tosyl-hydrazone or oxime derivatives under the same conditions. However, carboxy-azines react rapidly with tributylphosphine and give the corresponding aldazines
This paper describes two simple procedures for the one pot synthesis of labelled alpha-aminophosphates using deuterated acetic acid as labelling source. The reaction of alkyl phosphites with alpha-iminoacids is studied in some detail.