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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 41, 2010 - Issue 1
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Original Articles

Phosphotungstic Acid: An Efficient Catalyst for Synthesis of 2-Substituted Tetrahydroquinoline via Imino Diels–Alder Reaction and Fluorescent Studies

, &
Pages 33-40 | Received 03 Aug 2009, Published online: 14 Dec 2010
 

Abstract

For the first time Phosphotungstic acid (PTA), is used as a some new catalyst for the synthesis of tetrahydroquinoline derivatives with high yields is described. PTA a heterogeneous catalyst is inexpensive, easily available, eco-friendly, water soluble, recoverable, stable to aqueous reaction conditions and further more, these 2-methyl tetrahydroquinoline derivatives shows a remarkable fluorescence property.

ACKNOWLEDGMENTS

This research work is financially supported by Council of Scientific and Industrial Research, New Delhi—110 012 (Ref. No: 01(2301)/09/EMR–II dated 19-03-2009). Ms. Kavitha C.S. Achar is grateful to UGC for the award of JRF (Ref. No: KU/Sch/UGC/RFSM/2006-07/3236 dated 08-03-2007).

Notes

a 2 mol% PTA catalyst loaded.

b Isolated yield.

a Recoverd catalyst.

b Isolated yield.

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