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Synthesis of new 1,2,3-triazolo[1,2-a]benzotriazole derivatives or substituted 2,3-benzo-1,3a,6,6a-tetraazapentalenes. II

✍ Scribed by Giuliana Biagi; Irene Giorgi; Oreste Livi; Clementina Manera; Valerio Scartoni; Pier Luigi Barili

Publisher: Journal of Heterocyclic Chemistry
Year: 1997
Tongue: English
Weight: 508 KB
Volume: 34
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570340322

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✦ Synopsis

Abstract

This paper continues the synthesis of new 1,2,3‐triazolo[1,2‐a]benzotriazoles or 2,3‐benzo‐1,3a,6,6a‐tetrazapentalenes to submit to biological assays. The derivatives were obtained by deoxycyclization reactions of appropriate nitrophenyl‐1,2,3‐triazole derivatives and by thermal decomposition of appropriate azidophenyl‐1,2,3‐triazoles (Schemes 1 and 2). Some attempts to extend these synthetic routes to the preparation of 1,2,4‐triazolo[1,2‐a]benzotriazoles (Scheme 3) and 1,2,3‐triazolo[1,2‐b]‐4__H__‐1,2,3‐benzo‐triazines (Scheme 4) completely failed.

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