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5-Amino-3H-1,2,4-dithiazole-3-thione as a synthon: New synthesis of 2-thioureidobenzheteroazoles

✍ Scribed by N. R. Krishnaswamy; C. N. Sundaresan; P. N. K. Nambisan; K. Sandya

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
284 KB
Volume
5
Category
Article
ISSN
1042-7163

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✦ Synopsis

Abstract

New and efficient one pot syntheses of 2‐thioureidobenzimidazole (V), 2‐thioureidobenzoxazole (VI), and 2‐thioureidobenzothiazole (VII) have been developed. The target compounds were obtained in good yields by condensing the title synthon commonly known as isoperthiocyanic acid (I) with 1,2‐diaminobenzene (II), 2‐aminophenol (III), and 2‐aminothiophenol (IV), respectively, in various organic solvent and in the solid state.

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Synthesis of azomethylene derivatives of
Synthesis of azomethylene derivatives of 4-chloro-5H-1,2,3-dithiazole
✍ Vladimir N. Yarovenko; Andrey A. Es'kov; George V. Zatonsky; Igor V. Zavarzin; M 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 221 KB

## Abstract Previously unknown azomethylene derivatives of 4‐chloro‐5__H__‐1,2,3‐dithiazole 5–7 were synthesized by the reaction of the Appel salt 1 with __N__‐monosubstituted hydrazones 2–4. It was shown that they could be transformed into heterocyclic compounds 8–10.