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Catalytic behavior of silica‐supported chitosan‐platinum‐iron complex for asymmetric hydrogenation of ketones
Author(s) -
Wei WeiLin,
Hao ShaoJie,
Zhou Jian,
Huang MeiYu,
Jiang YingYan
Publication year - 2004
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.438
Subject(s) - catalysis , chitosan , platinum , materials science , nuclear chemistry , asymmetric hydrogenation , polymer chemistry , organic chemistry , chemistry , enantioselective synthesis
Silica‐supported chitosan‐platinum‐iron complex (SiO 2 ‐CS‐Pt‐Fe) is prepared by a simple method from silica, chitosan, H 2 PtCl 6 · 6H 2 O and FeCl 3 . It has been found to be an effective chiral catalyst for the asymmetric hydrogenation of 2‐hexanone to give ( S )‐(+)‐2‐hexanol and methyl acetoacetate to give methyl‐( S )‐(+)‐3‐hydroxybutyrate in 85.4 and 75.0% optical yields, respectively, if a proper content of Pt and Fe in SiO 2 ‐CS‐Pt‐Fe complex and appropriate reaction conditions are selected at room temperature and under 1 atm H 2 . The catalyst could be reused several times without any remarkable change in optical catalytic activity. Copyright © 2004 John Wiley & Sons, Ltd.