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Journal of Chemistry
Volume 2013, Article ID 938714, 5 pages
Research Article

High-Speed Reduction of Triarylpyrylium Salts Using Zn(BH4)2/SiO2 as an Efficient and Regiospecific Reducing Reagent

Department of Chemistry, Faculty of Science, University of Shahid Chamran, Ahvaz 6135743151, Iran

Received 19 June 2012; Accepted 4 August 2012

Academic Editor: Darren Sun

Copyright © 2013 Arash Mouradzadegun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The regiospecific reduction of some triarylpyrylium salts in the presence of modified hydride donors was investigated. Among these reagents, Zn(BH4)2/SiO2 performed the best results. The major advantages of this reagent are the cheapness, availability, simplicity in operation, very short reaction time and much improved regioselectivity in comparison with the other reducing reagents.