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Journal of Chemistry
Volume 2014, Article ID 596171, 5 pages
http://dx.doi.org/10.1155/2014/596171
Research Article

Pentafluoropropionic Acid: An Efficient and Metal-Free Catalyst for the One-Pot Synthesis of Tetrahydrobenzo[b]pyran Derivatives

1Department of Chemistry, Faculty of Sciences, Islamic Azad University, Tonekabon Branch, Tonekabon 46819-89711, Iran
2Young Researchers Club, Islamic Azad University, Tonekabon Branch, Tonekabon 46819-89711, Iran

Received 19 January 2014; Accepted 28 March 2014; Published 23 April 2014

Academic Editor: Mohamed Afzal Pasha

Copyright © 2014 Naser Montazeri 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.

Abstract

Pentafluoropropionic acid (PFPA) efficiently catalyzes the one-pot, three-component reaction of aromatic aldehyde, malononitrile, and dimedone to yield tetrahydrobenzo[b]pyran derivatives in high yields. This method is of great value because of its easy processing, short reaction time, environmentally, and high yields.