Synthesis of 5-aroylamino-3<i>H</i>-1,3,4-thiadiazole-2-thiones and their tautomerism
作者:Nam Sook Cho、Goo Ni Kim、Cyril Párkányi
DOI:10.1002/jhet.5570300219
日期:1993.3
5-Aroylamino-3H-1,3,4-thiadiazole-2-thiones 2 have been synthesized by acylation of 5-amino-3H-1,3,4-thiadiazole-2-thione 1. 5-Aroylamino-3H-1,3,4-thiadiazole-2-thiones can exist in two tautomeric forms — a thiol form and a thione form. On the basis of the 13C nmr spectra and additional experimental information, it has been established that the thione form is the stable form in which these compounds
5-芳酰基氨基-3- ħ -1,3,4-噻二唑-2-硫酮2已经由5-氨基-3-酰化合成ħ -1,3,4-噻二唑-2-硫酮1。5-Aroylamino-3 H -1,3,4-噻二唑-2-硫酮可以两种互变异构形式存在-硫醇形式和硫酮形式。根据13 C nmr光谱和其他实验信息,已经确定,硫酮形式是其中存在这些化合物的稳定形式。