1,5-Dihydro-1,2,3,4-thia(S IV )triazoles from quaternary salts of NN-disubstituted thioamides and sodium azide
作者:Susan I. Mathew、Frank Stansfield
DOI:10.1039/p19740000540
日期:——
Quaternarysalts [e.g.(I)] of disubstituted thioamides react with aqueous sodium azide at room temperature giving high yields of products which are probably 1,5,5-trisubstituted 1,5-dihydro-1,2,3,4-thia(SIV)triazoles [e.g.(III)]. These are decomposed by dilute acids with loss of nitrogen giving amidines [e.g.(VII)] and thiosulphinic S-esters [e.g.(VIII)]. When the thiatriazole (III) is heated in solution