期刊
TETRAHEDRON
卷 66, 期 5, 页码 1040-1044出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2009.11.007
关键词
Aerobic oxidation of alcohols; Palladium nanoparticles; Steroidal alcohols; Water
资金
- Spanish Ministry of Education and Science
The previously described catalyst system for the aerobic oxidation of alcohols, comprising palladium(II) acetate in combination with neocuproine in a 1:1 mixture of water and a water-miscible cosolvent such as ethylene carbonate or dimethylsulfoxide, was shown to involve palladium nanoparticles as the active catalyst. The latter are formed in situ or can be preformed by reduction of the palladium-neocuproine complex with hydrogen and they are stabilized by both the neocuproine ligand and the cosolvent. This catalyst system was successfully used for the selective aerobic oxidation of the steroidal secondary alcohols, nandrolone and 5 alpha-pregnan-3 alpha-ol-20-one, to the corresponding ketones. (C) 2009 Elsevier Ltd All rights reserved.
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