Pandey, Manoj K. ; Bisai, Alakesh ; Singh, Vinod K. (2006) Enantioselective turnover in glyoxylate-ene reactions catalyzed by chiral copper complexes Tetrahedron Letters, 47 (6). pp. 897-900. 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/j.tetlet.2005.11.159
Abstract
The catalytic, enantioselective carbonyl-ene reaction of ethyl glyoxylate with α-methylstyrene and 4-halo-α-methylstyrene has been investigated in the presence of copper triflate–bisoxazoline complexes. The reaction proceeded smoothly to give γ,δ-unsaturated-α-hydroxy esters in moderate to good yields and with excellent enantioselectivity (up to 100% ee). A hypothesis has been provided to explain the reversal of enantioselectivity in the reaction.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 55407 |
| Deposited On: | 18 Aug 2011 08:43 |
| Last Modified: | 18 Aug 2011 08:43 |
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