sodium hydrogen sulfide/diethylamine hydrochloride (8) as the reagent. Thioamides have also been prepared from amides, reacting them with tetraphosphorus decasulfide, either with or without additives (9), or using Lawesson’s reagent (10), ethylaluminum sulfide (11), or boron sulfide (12). Another method for the synthesis of thioamides utilizes elemental sulfur in the Willgerodt–Kindler reaction involving