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Synthesis 2009(6): 903-908  
DOI: 10.1055/s-0028-1087987
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Electrooxidation of Alcohols in N-Oxyl-Immobilized Silica Gel/Water ­Disperse System: Approach to Totally Closed System

Manabu Kuroboshi, Kentaro Goto, Hideo Tanaka*
Department of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Tsushima-Naka 3-1-1, Okayama­, Okayama 700-8530, Japan
Fax: +81(86)2518079; e-Mail: tanaka95@cc.okayama-u.ac.jp;
Further Information

Publication History

Received 25 September 2008
Publication Date:
02 March 2009 (online)

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Abstract

Electrooxidation of alcohols in a disperse system with N-oxyl-immobilized silica gel as a disperse phase and an aqueous NaBr/NaHCO3 solution as a disperse medium proceeded smoothly to give the corresponding carbonyl compounds. The N-oxyl-immobilized silica gel 1 was prepared by silane-coupling method. Recycling of both the aqueous solution and the N-oxyl-immobilized silica gel 1 was performed successfully.

Key words

alcohols - oxidations - solid-phase synthesis - electron transfer

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