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E-mail: gh_aghapour@du.ac.irReceived December 20, 2011, Accepted January 3, 2012In spite of many reports in the literature concerning with oxidation of benzylic alcohols to carbonyl compoundswith 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) in stoichiometric amounts or even more, we surprisinglyfound that benzylic alcohols are directly oxidized to oximes using a catalytic amount of DDQ in the presenceof hydroxylamine hydrochloride under solvent-free conditions. The present tandem catalytic method can beefficiently used for preparation of oximes in the presence of some other functional groups with excellentchemoselectivity. Key Words : Alcohol, Oxime, 2,3-Dichloro-5,6-dicyanobenzoquinone, Tandem synthesisIntroductionTandem processes that involve multiple chemical trans-formations in a single-pot with minimal work up and lesswaste generation have revolutionized synthetic chemistry inrecent years.

Selective Tandem Synthesis of Oximes from Benzylic Alcohols Catalyzed with 2, 3-Dichloro-5, 6-dicyanobenzoquinone