Synlett 2005(15): 2317-2320  
DOI: 10.1055/s-2005-872656
LETTER
© Georg Thieme Verlag Stuttgart · New York

An Efficient and Improved Method for the Synthesis of Bis(arylmethylidene)thiopyranones

M. Saeed Abaee*, Mohammad M. Mojtahedi, M. Mehdi Zahedi
Chemistry & Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
Fax: +98(21)88037185; e-Mail: abaee@ccerci.ac.ir;
Further Information

Publication History

Received 27 April 2005
Publication Date:
05 August 2005 (online)

Abstract

Double crossed aldol condensation of a variety of aromatic aldehydes with tetrahydrothiopyran-4-one in the presence of N-(trimethylsilyl)diethylamine and 5 M lithium perchlorate in diethyl ether at room temperature is described. Excellent yields of 3,5-bis(arylmethylidene)thiopyranones are achieved in a facile one-pot general procedure.