Synthesis and reactions of 2-(alkylthio)-4,4-dimenthyl-1,3-thiazole-5(4H)-thiones
作者:Junxing Shi、Anthony Linden、Heinz Heimgartner
DOI:10.1002/hlca.19940770721
日期:1994.11.2
Six 2-(alkylthio)-substituted 4,4-dimethyl-1,3-thiazole-5(4H)-thiones were synthesized according to a new method. The reactions of these compounds with allyl- and benzyllithium reagents, 1,3-dipoles, and dimethyl acetylenedicarboxylate proceeded in a similar manner to 2-alkyl-substituted analogues, while methyllithium reacted in a different way yielding trithio-orthoester derivatives.
carbon disulfide to 2-isopropylidene- and 2-methylene-1,3-dimethylimidazolidines gave the thermally stable, crystalline innersalts, 1,3-dimethylimidazolidiniodithioacetates (10 and 12), where carbenium ion and dithiocarboxylate parts are insulated by an sp3 carbon atom. X-Ray diffraction analyses of these compounds and the reaction of 10 with DMAD are described.