A 2-methylthio-3, 5-diaryl-1, 3, 4-thiadiazolium cation; its reactions, and further exploration of the chemistry of 2-alkyl-3, 5-diaryl-1, 3, 4-thiadiazolium cations

H Mastalerz, T Mohammad…

文献索引：Mastalerz, Harold; Mohammad, Taj; Gibson, Martin S. Canadian Journal of Chemistry, 1987 , vol. 65, p. 2713 - 2716

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被引用次数: 8

摘要

Activation of a representative 3, 5-diaryl-1, 3, 4-thiadiazole-2-thione by thione S-methylation gives a cation that is readily susceptible to nucleophilic substitution. Reactions with diethyl malonate, ethyl acetoacetate, acetylacetone, cyclopentan-1, 3-dione, or 3-ethylrhodanine under basic conditions lead to β, β-disubstituted methine bases and (or) β-substituted methine bases in cases where deacetylation occurs under the reaction conditions. This ...