Synthesis of pseudo-geminal-, pseudo-ortho-, and ortho-phosphinyl-oxazolinyl-[2.2]paracyclophanes for use as ligands in asymmetric catalysis.
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Whelligan, DK and Bolm, C (2006) Synthesis of pseudo-geminal-, pseudo-ortho-, and ortho-phosphinyl-oxazolinyl-[2.2]paracyclophanes for use as ligands in asymmetric catalysis. J Org Chem, 71 (12). 4609 - 4618. ISSN 0022-3263
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| PDF - Accepted Version Available under License : See the attached licence file. 379Kb | |
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Official URL: http://dx.doi.org/10.1021/jo060668h
Abstract
Syntheses of three regioisomers of aromatic-substituted phosphinyl-oxazolinyl-[2.2]paracyclophanes, pseudo-geminal, pseudo-ortho, and ortho, have been carried out or, in the latter two cases, newly developed. It has, therefore, been demonstrated that all aromatic-substituted isomers relevant for use as chelating ligands for asymmetric catalysis are accessible. These P,N-ligands, along with their diastereoisomers, were shown to exhibit widely differing activity and enantioselectivity (up to 89% ee) in the Pd-catalyzed asymmetric allylic alkylation reaction.
| Item Type: | Article |
|---|---|
| Additional Information: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Organic Chemistry copyright © American Chemical Society after peer review and technical editing by the publisher.To access the final edited and published work see http://dx.doi.org/10.1021/jo060668h. |
| Divisions: | Faculty of Engineering and Physical Sciences > Chemistry |
| ID Code: | 227185 |
| Deposited By: | Symplectic Elements |
| Deposited On: | 24 May 2012 13:23 |
| Last Modified: | 11 May 2013 14:40 |
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