This paper describes a facile and rapid approach to N-alkyl- and N-aryl-thi
ogluconamides employing delta-gluconolactone as starting material. The prot
ocol involves a three-step sequence to afford the corresponding thioamides
as crystalline substances in moderate to good yields. The Lawesson reagent
was found to be the reagent of choice to accomplish the key transformation
amide-thioamide. (C) 2000 Elsevier Science Ltd. All rights reserved.