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Report | Regular issue | Vol 23, No. 7, 1985, pp.1659-1669
Published online, 1st January, 1970
DOI: 10.3987/R-1985-07-1659
"One-step" Synthesis of an Indeno-indolizine Nucleus

Angelo Carotti,* Giovanni Casini, Enrico Gavuzzo, and Fernando Mazza

*Dipartimento Farmaco-Chimico, Università di Bari, Via Amendola 173, 70126 Bari, Italy

Abstract

The reaction of 2-hydroxy-2-phenacyl-1,3-indanedione with tosyl chloride in pyridine directly afforded in high yield the 11-benzoyl-10H-indeno[2,1-b]indolizine-10-one the structure of which has been determined by single crystal X-ray diffraction. A possible pathway of this unexpected novel annulation reaction is discussed.