Yadav, J. S. ; Reddy, B. V. S. ; Naveenkumar, V. ; Srinivasa Rao, R. ; Nagaiah, K. (2004) First example of ionic liquids-promoted domino Knoevenagel hetero-Diels-Alder reactions: a facile synthesis of pyrano [3, 2-c] coumarins Synthesis, 2004 (11). pp. 1783-1788. ISSN 0039-7881
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Official URL: http://www.thieme-connect.com/ejournals/abstract/s...
Related URL: http://dx.doi.org/10.1055/s-2003-829140
Abstract
O-Prenylated aromatic aldehydes undergo smooth intramolecular domino Knoevenagel hetero-Diels-Alder reactions with 4-hydroxycoumarins in the air- and moisture-stable ionic liquid [bmim]BF4 under mild conditions to afford a novel class of cis-annulated pyranocoumarins in high yields. The recovered ionic liquid can be reused in successive runs with consistent activity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Thieme Medical Publishers. |
| Keywords: | Diels-Alder Reaction; Heterodienes; Coumarins; cis-annulated Polyclic Heterocycles |
| ID Code: | 62945 |
| Deposited On: | 24 Sep 2011 04:48 |
| Last Modified: | 24 Sep 2011 04:48 |
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