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Highly Selective Oxidation of Organosilanes to Silanols with Hydrogen Peroxide Catalyzed by a Lacunary Polyoxotungstate

Authors

  • Ryo Ishimoto,

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
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  • Keigo Kamata  Dr.,

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
    2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
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  • Noritaka Mizuno  Prof. Dr.

    1. Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan), Fax: (+81) 3-5841-7220
    2. Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
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  • We are grateful to Dr. K. Yamaguchi and Y. Ojima for providing the optically active silane. This work was supported by the Core Research for Evolutional Science and Technology (CREST) program of the Japan Science and Technology Agency (JST), the Global COE Program (Chemistry Innovation through Cooperation of Science and Engineering), the Development in a New Interdisciplinary Field Based on Nanotechnology and Materials Science Programs, and a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Science, Sports, and Technology of Japan.

Abstract

original image

Silanolsynthese: Das lakunare Polyoxowolframat (nBu4N+)4[γ-SiW10O34(H2O)2] (I) mit zwei Leerstellen ist ein effizienter Homogenkatalysator für die hoch selektive Oxidation von Organosilanen zu Silanolen mit 30–60 % H2O2. Silane 1 mit Aryl-, Alkyl-, Alkenyl-, Alkinyl- und Alkoxygruppen werden in hohen Ausbeuten chemoselektiv zu den jeweiligen Silanolen 2 umgesetzt, wobei nur ein Äquivalent an wässrigem H2O2 in Bezug auf das Substrat benötigt wird.

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