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Paper | Regular issue | Vol 43, No. 7, 1996, pp.1391-1402
Published online, 1st January, 1970
DOI: 10.3987/COM-95-7368
A New Entry to Pyrano[3,2-f]indolizines via the Regioselective Formation of an Indolizidin-7-one Enamine

Olivier Pollet, Guy Cordonnier, Cherif Bengourina, Clarisse Randria, and Henri Sliwa*

*Laboratoire de Chimie Organique et Environnement, Université des Sciences et Technologies de Lille, Bat. C4 -2eme Etage 59655 Villeneuve d' Ascq Cedex, France

Abstract

From indolizidin-7-one (1), the preparation of several (pyrrolidine, piperidine and morpholine) enamines was described. The isolation of one of them (morpholine) as a pure regioisomer allowed the synthesis of pyrano[3,2-f]indolizines for which only a few examples were known.