PAPER	Synthesis 2004: 1239-1242   DOI: 10.1055/s-2004-822348
© Georg Thieme Verlag Stuttgart · New York
N-Bromosuccinimide as an Almost Neutral Catalyst for Efficient Synthesis of Dihydropyrimidinones Under Microwave Irradiation
Hassan Hazarkhani, Babak Karimi*
Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), P.O.Box 45195-159, Gava Zang, Zanjan, Iran Fax: +98(241)4249023; e-Mail: karimi@iasbs.ac.ir;
Received 20 January 2004

Abstract

NBS has been used as a mild, efficient and almost neutral catalyst for the preparation of dihydropyrimidinones (DHPMs) and the corresponding thio-derivatives under microwave irradiation. By this method, a wide variety of DHPMs were synthesized in good to high yields.

Key words

N-bromosuccinimide - dihydropyrimidinones - microwave irradiation