SYNTHESIS OF 5-AROYLAMINO-3H-1,3,4-THIADIAZOLE-2-THIONES AND THEIR TAUTOMERISM

Citation
Ns. Cho et al., SYNTHESIS OF 5-AROYLAMINO-3H-1,3,4-THIADIAZOLE-2-THIONES AND THEIR TAUTOMERISM, Journal of heterocyclic chemistry, 30(2), 1993, pp. 397-401
Citations number
35
Categorie Soggetti
Chemistry Inorganic & Nuclear
ISSN journal
0022152X
Volume
30
Issue
2
Year of publication
1993
Pages
397 - 401
Database
ISI
SICI code
0022-152X(1993)30:2<397:SO5ATT>2.0.ZU;2-Z
Abstract
5-Aroylamino-3H-1,3,4-thiadiazole-2-thiones 2 have been synthesized by acylation of 5-amino-3H-1,3,4-thi-adiazole-2-thione 1. 5-Aroylamino-3 H-1,3,4-thiadiazole-2-thiones can exist in two tautomeric forms - a th iol form and a thione form. On the basis of the C-13 nmr spectra and a dditional experimental information, it has been established that the t hione form is the stable form in which these compounds exist.