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Molecules 2005, 10(2), 475-480; doi:10.3390/10020475
Article

5-Furan-2yl[1,3,4]oxadiazole-2-thiol, 5-Furan-2yl-4H [1,2,4] triazole-3-thiol and Their Thiol-Thione Tautomerism

* ,  and
Department of Chemistry, Faculty of Science, Fırat University, 23119, Elazıg, Turkey
* Author to whom correspondence should be addressed.
Received: 30 June 2004 / Revised: 15 July 2004 / Accepted: 1 August 2004 / Published: 28 February 2005
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Abstract

5-Furan-2-yl[1,3,4]oxadiazole-2-thiol (Ia) and 5-furan-2-yl-4H-[1,2,4]-triazole-3-thiol (Ib) were synthesized from furan-2-carboxylic acid hydrazide. Mannich basesand methyl derivatives were then prepared. The structures of the synthesized compoundswere confirmed by elemental analyses, IR and 1H-NMR spectra. Their thiol-thione tautomericequilibrium is described.
Keywords: 1; 3; 4-Oxadiazoles; 1; 2; 4-triazoles; Mannich bases; thiol-thione tautomerism. 1; 3; 4-Oxadiazoles; 1; 2; 4-triazoles; Mannich bases; thiol-thione tautomerism.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Koparır, M.; Çetin, A.; Cansız, A. 5-Furan-2yl[1,3,4]oxadiazole-2-thiol, 5-Furan-2yl-4H [1,2,4] triazole-3-thiol and Their Thiol-Thione Tautomerism. Molecules 2005, 10, 475-480.

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