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Note | Regular issue | Vol 75, No. 5, 2008, pp.1205-1211
Published online, 25th January, 2008
DOI: 10.3987/COM-07-11288
MoO3/Al2O3: An Efficient and Reusable Heterogeneous Catalyst for Solvent-Free Synthesis of Coumarins via Pechmann Condensation

Sweety Singhal, Suman L. Jain, and Bir Sain*

*Chemical and Biotechnology Division, Indian Institute of Petroleum, Dehradun-248005, India


16 wt % alumina supported MoO3 has been found to be an efficient catalyst for the synthesis of various substituted coumarins via Pechmann condensation. This method offers several advantages like high yields, facile recovery and reusability of the catalyst without loss in activity, nearly neutral and solvent free condition.