A MCM-41-supported platinum carbonyl cluster-derived asymmetric hydrogenation catalyst

نویسندگان

  • Susmit Basu
  • Himadri Paul
  • Chinnakonda S. Gopinath
  • Sumit Bhaduri
  • Goutam Kumar Lahiri
چکیده

Anionic platinum carbonyl cluster has been ion paired with cinchonidium groups that are chemically bound to the surface of MCM-41 and fumed silica. In the hydrogenation of methyl pyruvate or acetophenone the fumed silica-based catalyst gives zero enantioselectivity, but under optimum conditions enantiomeric excesses of > 90 and ∼ 40%, respectively, are obtained with the MCM-41-based catalyst.

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تاریخ انتشار 2005