Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27952
Title: Pd-catalyzed asymmetric alternating co-polymerization of propene with carbon monoxide using ionic liquids
Authors: Wang, HJ
Wang, LL
Lam, WS
Yu, WY 
Chan, ASC
Issue Date: 2006
Publisher: Pergamon Press
Source: Tetrahedron : asymmetry, 2006, v. 17, no. 1, p. 7-11 How to cite?
Journal: Tetrahedron : asymmetry 
Abstract: A protocol for Pd-catalyzed stereoselective co-polymerization of propene and carbon monoxide using chiral ligands, such as (2S,3S)-DIOP and (R)-P-Phos in [C4mim][PF6]/[C6mim][PF6] as an ionic liquid medium was developed. With (2S,3S)-DIOP as chiral ligand and [C4mim][PF6] as medium, the Pd-catalyzed co-polymerization of propene and CO gave almost completely regioregular polyketones, and the product polymer showed moderate stereoregularity (61% of ℓ-diads). The highest molar optical rotation = +15.9 and polydispersity = 1.2 were attained when (R)-P-Phos was used as the ligand and [C6mim]PF6 as the solvent. The co-polymer exhibited regioregularity of H-H/H-T/T-T (%) = 17:66:17.
URI: http://hdl.handle.net/10397/27952
ISSN: 0957-4166
EISSN: 1362-511X
DOI: 10.1016/j.tetasy.2005.11.030
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