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Communication | Regular issue | Vol 4, No. 12, 1976, pp.1909-1912
Published online, 1st January, 1970
DOI: 10.3987/R-1976-12-1909
Acetyl-1,3,4-thiadiazolines from the Reaction of Thiosemicarbazones with Acetic Anhydride

Seiju Kubota,* Kazuichi Fujikane, Masayuki Uda, and Tamiya Yoshioka

*Faculty of Pharmaceutical Sciences, University of Tokushima, Sho-machi, Tokushima 770-8505, Japan

Abstract

N.m.r. spectroscopy showed that the compounds obtained by reaction of thiosemicarbazones (I) with acetic anhydride are 2-acetylamino-4-acetyl-1,3,4-thiadiazolines (II) and not N4,S-diacetyl-thiosemicarbazones (III) as thought previously.