The synthesis and reactivity of some 2-amino-5-bromo-],1,3,4-thiadiazoles and the corresponding Δ<sup>2</sup>-1,3,4-thiadiazolines
作者:Giuseppe Werber、Francesco Buccheri、Manlio Gentile
DOI:10.1002/jhet.5570140521
日期:1977.8.4
The synthesis of some 2-amino-5-bromo-1,3,4-thiadiazoles is reported; these substrates are found to behave as ambidenl nucleophiles in alkylation, aeylation and nitrosation reactions, giving thiadiazoliens along with thiadiazole derivatives. This finding suggests amine-imine tautomerism between these compounds and the corresponding Δ2-1,3,4-thiadiazolines.
据报道一些2-氨基-5-溴-1,3,4-噻二唑的合成。发现这些底物在烷基化,缩醛反应和亚硝化反应中表现出环糊状亲核试剂的作用,生成噻二唑和噻二唑衍生物。这一发现表明这些化合物和相应Δ之间胺-亚胺互变异构2 -1,3,4-噻二唑类。