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Phosphotungstic Acid: An Efficient Catalyst for the Aqueous Phase Synthesis of Bis-(4-hydroxycoumarin-3-yl)methanes |
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| Authors: | Prashant Singh Pradeep Kumar Anju Katyal Rashmi Kalra Sujata K. Dass Satya Prakash Ramesh Chandra | |
| Affiliation: | 1. A. R. S. D. Collage, University of Delhi, Delhi, 110007, India 3. Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi, 110007, India 2. Department of Chemistry, University of Delhi, Delhi, 110007, India 4. A. N. D. Collage, University of Delhi, Delhi, 110007, India 5. V.P.C. Institute, University of Delhi, Delhi, 110007, India 6. Department of Biomedical Engineering, McGill University, Montreal, QC, H3A 2B4, Canada |
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| Abstract: | In this present work, we report that phosphotungstic acid provides a simple, efficient and environmentally benign route is a two-component one-pot domino Knoevenagel-type condensation/Michael reaction between 4-coumarin derivative and an aldehyde in water as a solvent in shorter duration with high yields.  | |
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