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Asymmetric epoxidation of cinnamyl alcohol catalyzed by silica‐supported casein–Co complex
Author(s) -
Zhang Xi,
Han Bing,
Hua YuNing,
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.176
Subject(s) - cinnamyl alcohol , catalysis , yield (engineering) , cobalt , casein , alcohol , organic chemistry , oxygen , chemistry , materials science , polymer chemistry , selectivity , metallurgy
Silica‐supported casein–Co complex (Si‐CA–Co) was prepared from silica, casein and cobalt chloride, and found to be useful as a chiral catalyst for the asymmetric epoxidation of cinnamyl alcohol to (2R,3R)‐(+)‐3‐phenylglycidol at 70 °C and under 1 atmospheric oxygen pressure. When a proper content of cobalt in the Si‐CA–Co complex and suitable reaction conditions were selected, the product and optical yield could be amounted to 70.6 and 92.0%, respectively, and the Si‐CA–Co complex could be reused several times without any remarkable change in the optical catalytic activity. Copyright © 2002 John Wiley & Sons, Ltd.