Yadav, J. S. ; Subba Reddy, B. V. ; Madhuri, Ch. ; Sabitha, G. ; Jagannadh, B. ; Kiran Kumar, S. ; Kunwar, A. C. (2001) LiBF4-catalyzed formation of fused pyrano- and furanobenzopyrans Tetrahedron Letters, 42 (36). pp. 6381-6384. ISSN 0040-4039
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0040-4039(01)01257-6
Abstract
Lithium tetrafluoroborate efficiently catalyzes an unusual cyclization of o-hydroxybenzaldimines with 2,3-dihydrofuran and 3,4-dihydro-2H-pyran at ambient temperature to afford a class of new pyrano- and furanobenzopyran derivatives in excellent yields with high diastereoselectivity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Lithium Tetrafluoroborate; O-hydroxyaldimines; Cyclic Enol Ethers; Cis-fused Chromans |
| ID Code: | 59542 |
| Deposited On: | 07 Sep 2011 05:30 |
| Last Modified: | 07 Sep 2011 05:30 |
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