Asymmetric hydroformylation of styrene by polymer-supported catalysts: platinum-tin chloride supported on polymer-bound chiral phosphines

Polymers (2 and 3) containing an optically active chelating phosphine ligand were obtained by copolymerizing N-acryloyl-(2S, 4S)-4-(diphenyl-phosphino)-2-[(diphenylphosphino)methyl]pyrrolidine (1) either with hydroxyethyl methacrylate/ethylene dimethacrylate or with styrene/divinyl-benzene, respecti...

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Bibliographic Details
Published in:Journal of molecular catalysis 1983-10, Vol.21 (1-3), p.203-210
Main Authors: Stille, J.K., Parrinello, Giovanni
Format: Article
Language:English
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Summary:Polymers (2 and 3) containing an optically active chelating phosphine ligand were obtained by copolymerizing N-acryloyl-(2S, 4S)-4-(diphenyl-phosphino)-2-[(diphenylphosphino)methyl]pyrrolidine (1) either with hydroxyethyl methacrylate/ethylene dimethacrylate or with styrene/divinyl-benzene, respectively. Platinum chloride was exchanged onto the polymer supports, and hydroformylation reactions of styrene were carried out in the presence of stannous chloride with a 1:1 mixture of H2/CO. Although branched to normal ratios were low (~0.5), high optical yields (70%) of hydratropaldehyde were obtained. These are the highest optical yields that have been achieved with a polymer-supported chiral catalyst.
ISSN:0304-5102
DOI:10.1016/0304-5102(93)80120-J