Conjugate additions of lithium dialkynylcuprates (RC C)(2)CuLi to activated chromones. Unexpected formation of the 6H-bis 1 benzopyrano 2,3-b : 3',4'-e pyridine system
Daia, D. E., Gabbutt, C. D., Heron, B. M., Hepworth, J. D., Hursthouse, M. B. and Malik, K. M. A. (2003) Conjugate additions of lithium dialkynylcuprates (RC C)(2)CuLi to activated chromones. Unexpected formation of the 6H-bis 1 benzopyrano 2,3-b : 3',4'-e pyridine system. Tetrahedron Letters, 44, (7), 1461-1464. (doi:10.1016/S0040-4039(02)02857-5)
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Official URL: http://dx.doi.org/10.1016/S0040-4039(02)02857-5
Description/Abstract
Lithium dialkynylcuprates [(RCequivalent toC)(2)CuLi], 1a-d, are easily generated and undergo conjugate additions to activated chromones giving 2-alkynylchroman-4-ones 4a-d, 13, 15c,d and 5, however, 1,4-additions to 3 proceed anomalously to give the eneynonitriles 6a-b and the bisbenzopyranopyridine 7.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | alpha,beta-unsaturated ketones, reagents, transmetalation, enones |
| Related URLs: | http://dx.doi.org/10.1016/S004...02)02857-5 |
| Subjects: | Q Science Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| ePrint ID: | 19939 |
| URI: | http://eprints.soton.ac.uk/id/eprint/19939 |
| Deposited On: | 17 Feb 2006 |
| Last Modified: | 01 Jun 2011 07:14 |
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