BLASCHETTE, VON ARMAND;NAVEKE, MARTINA, CHEM.-ZTG, 112,(1988) N 11, C. 351-353
作者:BLASCHETTE, VON ARMAND、NAVEKE, MARTINA
DOI:——
日期:——
N-hydroxypyridine-2(1H)-thione derivatives of carboxylic acids as activated esters. Part I. The synthesis of carboxamides
作者:Derek H.R. Barton、J. Albert Ferreira
DOI:10.1016/0040-4020(96)00487-5
日期:1996.7
The reaction between an acyl derivative of N-hydroxypyridine-2(1H)-thione (a Barton PTOC ester) and either an amine (primary or secondary), or the corresponding sulfenamide, led to the formation of a carboxamide in a clean transformation requiring minimal work-up and purification. The reaction with a sulfenamide is particularly useful since the only by-product, an unsymmetrical disulfide, is of both