Immobilization of ruthenium in organic-inorganic hybrid copolymers: a reusable heterogeneous catalyst for oxidation of alcohols with molecular oxygen

Chemistry, an Asian Journal
Tsutomu MatsumotoShŭ Kobayashi

Abstract

A novel organic-inorganic hybrid ruthenium (HB Ru) catalyst for the oxidation of alcohols with molecular oxygen has been developed. The catalyst was prepared from a polystyrene-based copolymer, which includes a trimethoxysilyl functionality, and dichlorotris(triphenylphosphine)ruthenium, [RuCl2(PPh3)3], as the metal source. A sol-gel process was employed for heterogenization of the catalyst. The choice of both ruthenium species and trialkoxysilyl-bearing monomers was found to be important for high catalytic activity. In the presence of HB Ru corresponding to 5 mol % loading of ruthenium, the alcohols were oxidized with molecular oxygen or air at atmospheric pressure without any additives to afford the corresponding aldehydes or ketones in good to excellent yields. The catalyst could be recovered and reused at least five times without loss of activity.

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Citations

Dec 17, 2015·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Yoshinari SawamaHironao Sajiki
Jun 26, 2008·Chemistry, an Asian Journal·Sachiko AritaTakao Ikariya
May 8, 2010·Chemical Communications : Chem Comm·Shigeki MoriHironao Sajiki
Feb 18, 2010·Photochemistry and Photobiology·Young-Chul LeeHyun-Jae Shin
Jun 13, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Satoshi MuratsuguMizuki Tada
Feb 13, 2009·Chemical Reviews·Ryo Akiyama, Shu Kobayashi
Dec 2, 2020·Accounts of Chemical Research·Tomohiro YasukawaShu Kobayashi

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