Issue 14, 2005

3-Mercaptopropionic acid–nitrile imine adducts. An unprecedented cyclization into 1,3,4-thiadiazol-2(3H)-ones and -2(3H)-thiones

Abstract

3-Mercaptopropionic acid–nitrile imine acyclic adducts (6a–c) undergo cyclocondensation with 1,1′-carbonyldiimidazole to afford the respective 1,3,4-thiadiazol-2-(3H)-ones (7a–c). Corresponding 1,3,4-thiadiazol-2(3H)-thiones (8a–c) were likwise produced from 6a–c and 1,1′-thiocarbonyldiimidazole, with consequent elimination of the propionate moiety. The constitution of these heterocyclic products follows from analytical and spectral data and is confirmed by single crystal X-ray structure determination for 7b.

Graphical abstract: 3-Mercaptopropionic acid–nitrile imine adducts. An unprecedented cyclization into 1,3,4-thiadiazol-2(3H)-ones and -2(3H)-thiones

Supplementary files

Article information

Article type
Paper
Submitted
12 Apr 2005
Accepted
13 May 2005
First published
13 Jun 2005

Org. Biomol. Chem., 2005,3, 2599-2603

3-Mercaptopropionic acid–nitrile imine adducts. An unprecedented cyclization into 1,3,4-thiadiazol-2(3H)-ones and -2(3H)-thiones

J. A. Zahra, B. A. Abu Thaher, M. M. El-Abadelah and R. Boese, Org. Biomol. Chem., 2005, 3, 2599 DOI: 10.1039/B505010C

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