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1H, 13C, 15N and 19F NMR study of acetylation products of heterocyclic thiosemicarbazones

✍ Scribed by Lyudmila I. Larina; Valentina N. Elokhina; Tatyana I. Yaroshenko; Anatolii S. Nakhmanovich; Gennadii V. Dolgushin

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
173 KB
Volume
45
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Novel 2‐acetylamino‐4‐acetyl‐5‐aryl(heteryl)‐1,3,4‐thiadiazolines, 2‐acetylamino‐5‐aryl(heteryl)‐1,3,4‐thiadiazoles, and some of their salts were prepared and studied by multinuclear ^1^H, ^13^C, ^15^N, ^19^F and 2D NMR spectroscopy. The acetylation of thiosemicarbazones is accompanied by ring closure to form the corresponding 1,3,4‐thiadiazolines and 1,3,4‐thiadiazoles. ^15^N NMR spectroscopy is a unique method for the identification of thiadiazole pyridinium salts. Copyright © 2007 John Wiley & Sons, Ltd.

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