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Catalytic behavior of silica‐supported methylcellulose–oxalic acid–Pt complex in asymmetric hydrogenation of 2‐butanone and itaconic acid
Author(s) -
Liu HongWen,
Xin Fei,
Wu LiMin,
Huang MeiYu,
Jiang YingYan
Publication year - 2002
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.175
Subject(s) - itaconic acid , oxalic acid , catalysis , chemistry , butanone , polymer chemistry , silica gel , nuclear chemistry , materials science , organic chemistry , polymer , solvent , copolymer
A new silica‐supported biopolymer–oxalic acid–Pt complex was prepared by a simple method. Methylcellulose (mc) reacted with oxalic acid in the presence of silica to give a complex SiO 2 –MC–(COOH) 2 on the surface of silica, then reacted with H 2 PtCl 6 ·6H 2 O to form a Pt complex [SiO 2 –MC–(COOH) 2 –Pt]. This complex was found to be able to catalyze the asymmetric hydrogenation of 2‐butanone to ( S )‐(+)‐2‐butanol and itaconic acid to ( S )‐(−)‐methylsuccinic acid, respectively, at room temperature and under 1 atm H 2 . The experimental results showed that the product and optical yields were remarkably affected by the Pt content in the complex and the catalyst could be reused without any remarkable change in optical catalytic activity. Copyright © 2002 John Wiley & Sons, Ltd.