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Synlett 2005(5): 0813-0816  
DOI: 10.1055/s-2005-863707
LETTER
© Georg Thieme Verlag Stuttgart · New York

Immobilization of a Platinum Catalyst Using the Polymer Incarcerated (PI) Method and Application to Catalytic Reactions

Hiroyuki Hagio, Masaharu Sugiura, Shu Kobayashi*
Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
Fax: +81(3)56840634; e-Mail: skobayas@mol.f.u-tokyo.ac.jp;
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Publikationsverlauf

Received 24 December 2004
Publikationsdatum:
09. März 2005 (online)

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Abstract

Immobilization of a platinum catalyst was carried out on the basis of the polymer incarcerated (PI) method. The PI platinum catalyst thus prepared showed high activity in hydrosilylation, and recovery and reuse of the catalyst were attained without loss of activity. Application of this catalyst to hydrogenation is also reported.

Key words

immobilization - platinum - polymer - hydrosilylation - hydrogenation

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14

The lower detection limit is 5 ppm.

15

The lower detection limit is 0.4 ppm.

21

The reaction using pentamethyldisiloxane gave the hydrosilylation product in 69% yield (6:7 = 85:15), while diethoxymethylsilane also gave a similar result (60% yield, 6:7 = 85:15).