Tetrahedron Letters

Friedel–Crafts cyclization of tertiary alcohols using bismuth (III) triflate

B Nammalwar, RA Bunce

Index: Nammalwar, Baskar; Bunce, Richard A. Tetrahedron Letters, 2013 , vol. 54, # 32 p. 4330 - 4332

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Citation Number: 8

Abstract

Bismuth (III) triflate [Bi (OTf) 3] has been developed as an efficient and mild catalyst for intramolecular Friedel–Crafts cyclizations of tertiary alcohols to prepare disubstituted tetrahydronapthalenes, chromans, thiochromans, tetrahydroquinolines, and tetrahydroiso- quinolines. The method represents a unified strategy to synthesize a variety of ring systems from tertiary alcohols using a common Lewis acid.