Catalytic Selective Oxidation of Benzyl Alcohols to Aldehydes with Rhenium Complexes
The system (nBu4N)ReO4 5/PhIO/CH 2Cl2, T = 298 K catalyses effectively and with total selectivity the anaerobic oxidation of a range of primary substituted benzyl alcohols (o-, m-, p-X-C6H4-CH2OH, X = H, Me, MeO, Cl, NO2, CF3) to the corresponding aldehydes; in contrast, it is unreactive towards secondary benzyl and aliphatic (primary and secondary) alcohols. This may prove of interest in synthetic organic transformations, when several alcoholic functionalities are present in the same molecule.
P. Paraskevopoulou et al., "Catalytic Selective Oxidation of Benzyl Alcohols to Aldehydes with Rhenium Complexes," Journal of Molecular Catalysis A: Chemical, vol. 240, no. 1-2, pp. 27-32, Elsevier, Oct 2005.
The definitive version is available at http://dx.doi.org/10.1016/j.molcata.2005.06.035
Keywords and Phrases
Alcohols; Aldehydes; Aromatic Compounds; Catalyst Selectivity; Complexation; Oxidation; Rhenium; Rhenium Compounds; Substitution Reactions; Anaerobic Oxidation; Hypervalent Iodine; Organic Transformations; Selectivity; Catalysis
International Standard Serial Number (ISSN)
Article - Journal
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