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Synfacts 2007(5): 0557-0557  
DOI: 10.1055/s-2007-968487
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Asymmetric Reactions Using Chiral Catalysts Encapsulated in a Mesoporous Cage

Contributor(s): Yasuhiro Uozumi, Hiroe Takenaka
H. Yang, J. Li, J. Yang, Z. Liu, Q. Yang*, C. Li*
Dalian Institute of Chemical Physics, P. R. of China
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Publication History

Publication Date:
24 April 2007 (online)

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Significance

The authors prepared the heterogeneous chiral catalyst Co(Salen)/SBA-16-C8 or Ru-TsDPEN/SBA-16-2Ph in which a chiral metal complex was entrapped in the cage of SBA-16 by modifying the entrance pore size of the cage using silylation (eq. 1). The catalytic performance of the encapsulated complexes for the asymmetric ring-opening reaction of epoxides [Co(Salen)/SBA-16-C8, eq. 2] and the asymmetric transfer hydrogenation of ketones (Ru-TsDPEN/SBA-16-2Ph, eq. 3) were comparable to their homogeneous counterparts.