Synthesis 2011(15): 2471-2477  
DOI: 10.1055/s-0030-1260091
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Intramolecular Friedel-Crafts Alkylation of Chalcone Epoxides Using Indium(III) Chloride as an Efficient Catalyst

Naseem Ahmed*, B. Venkata Babu, Harendra Kumar
Department of Chemistry, Indian Institute of Technology, Roorkee 247 667, Uttarakhand, India
Fax: +91(1332)285745; e-Mail: nasemfcy@iitr.ernet.in;
Further Information

Publication History

Received 6 April 2011
Publication Date:
08 July 2011 (online)

Abstract

Indium(III) chloride catalyzes the ring opening of chalcone epoxides followed by intramolecular Friedel-Crafts alkylation under mild conditions at room temperature to afford highly functionalized 3-aryl-2-hydroxy-2,3-dihydro-1H-inden-1-ones in excellent yields (81-95%).