Base promoted aerobic oxidation of alcohols to corresponding aldehydes or ketones catalyzed by CuCl/TEMPO

An efficient and selective aerobic oxidation of alcohols to the corresponding aldehydes or ketones in the ionic liquid [bmim][PF 6] using CuCl/TEMPO/base catalytic system has been developed. Base, as the co-catalyst, accelerates the oxidation procedure remarkably. A possible mechanism for oxidation...

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Bibliographic Details
Published in:Catalysis communications 2008-03, Vol.9 (6), p.1379-1382
Main Authors: Lin, Liu, Liuyan, Ji, Yunyang, Wei
Format: Article
Language:English
Subjects:
Alcohol selective oxidation
Base
Ionic liquid
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Summary:An efficient and selective aerobic oxidation of alcohols to the corresponding aldehydes or ketones in the ionic liquid [bmim][PF 6] using CuCl/TEMPO/base catalytic system has been developed. Base, as the co-catalyst, accelerates the oxidation procedure remarkably. A possible mechanism for oxidation of alcohols promoted by bases was supposed. Bases with high coordinating ability show high promoting effect and might have dual roles: as a base to deprotonate the alcohol and as a ligand to coordinate with copper(I) salt, bases with low coordinating ability might act only as a base to deprotonate the alcohol and show moderate promoting effect.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2007.11.041