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E-Journal of Chemistry
Volume 6 (2009), S1, Pages S390-S396

LiHSO4/SiO2 as a New, Efficient and Reusable Catalytic System for the Chemoselective Conversion of Aldehydes to Acylals under Solvent-Free Conditions

Abdolkarim Zare,1 Alireza Hasaninejad,2 Esmael Rostami,1 Ahmad Reza Moosavi-Zare,3 Maria Merajoddin,1 Azam Arghoon,1 Nasrin Pishahang,1 and Mohsen Shekouhy2

1Department of Chemistry, Payame Noor University (PNU), Iran
2Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr-75169, Iran
3Faculty of Chemistry, Bu-Ali Sina University, P. O. Box 4135, Hamedan - 6517838683, Iran

Received 11 February 2009; Accepted 5 April 2009

Copyright © 2009 Hindawi Publishing Corporation. 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.


A highly efficient, green and expeditious solvent-free method is described for the chemoselective conversion of aldehydes to the corresponding acylals in excellent yields, using acetic anhydride in the presence of catalytic amount (20 mol%) of silica-supported LiHSO4. Ketones does not react under these reaction conditions. LiHSO4/SiO2 can be recovered and reused without any significant loss of its catalytic activity.