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Note | Regular issue | Vol 51, No. 9, 1999, pp.2213-2220
Published online, 1st January, 1970
DOI: 10.3987/COM-99-8618
■ Synthesis of 1H-1,2,4-Triazolo[5,1-a]isoindoles by Intramolecular Condensation of 4-Substituted 1,2,4-Triazol-1-ium 4-Substituted Benzoyl 2,4,6-Trinitrophenylmethylides

Georgiana G. Surpateanu,* Gérard Vergoten, Abdelaziz Elass, and Gheorghe Surpateanu

*CRESIMM Centre de Recherche et Etudes en Simulation et Modélisation Molécularies, UMR 111 CNRS, Université des Sciences et Technologies de Lille, Bat. C8, 59655 Villeneuve D' Ascq Cedex, France

Abstract

The reaction of the 4-substituted 1,2,4-triazol-1-ium 4-substituted benzoyl 2,4,6-trinitrophenylmethylides (5) with piperidine gave the 1H-1,2,4-triazolo[5,1-a]isoindoles (7) by a cyclization and then elimination of nitrous acid.