Type: Article
Microwave-promoted efficient conversion of acetophenones to 1,3,5-triarylbenzenes catalyzed by H3PW12O40 and nano-silica supported H3PW12O40 as reusable catalysts
Journal: Polyhedron (02775387)Year: 4 January 2012Volume: 31Issue: Pages: 721 - 728
DOI:10.1016/j.poly.2011.10.027Language: English
Abstract
H3PW12O40 and nano-silica supported H 3PW12O40 were found to be efficient heterogeneous catalysts for the preparation of 1,3,5-triarylbenzenes via triple self condensation of acetophenones under microwave irradiation and solvent-free conditions. High yields, short reaction times, easy work-up, easy availability and handling, eco-friendly and reusability of the catalysts are the main aspects of the present method. The catalytic mechanism of 1,3,5-triarylbenzenes synthesis is also proposed. © 2011 Elsevier Ltd. All rights reserved.