Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31349
Title: Preparation and use of MeO-PEG-supported chiral diphosphine ligands : soluble polymer-supported catalysts for asymmetric hydrogenation
Authors: Fan, QH
Deng, GJ
Lin, CC
Chan, ASC
Issue Date: 2001
Publisher: Pergamon Press
Source: Tetrahedron : asymmetry, 2001, v. 12, no. 8, p. 1241-1247 How to cite?
Journal: Tetrahedron : asymmetry 
Abstract: Two new chiral MeO-PEG-supported (R)-BINAP and (3R,4R)-Pyrphos ligands were synthesized and employed in the Ru(II)- and Rh(I)-catalyzed asymmetric hydrogenation of 2-(6′-methoxy-2′-naphthyl)propenoic acid 5 and prochiral enamides 10. The results showed that these new soluble polymeric catalysts exhibited high catalytic activity and enantioselectivity. Enantiomeric excesses (e.e.s) in the ranges 90-96% and 86-96% were achieved in the hydrogenation of 5 and 10, respectively. Furthermore, these catalysts could be recovered easily and the recycled catalysts were shown to maintain their efficiency in subsequent reactions.
URI: http://hdl.handle.net/10397/31349
ISSN: 0957-4166
EISSN: 1362-511X
DOI: 10.1016/S0957-4166(01)00210-5
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