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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 44, 2014 - Issue 6
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Original Articles

Lanthanum Triflate–Catalyzed Rapid Oxidation of Secondary Alcohols Using Hydrogen Peroxide Urea Adduct (UHP) in Ionic Liquid

, &
Pages 800-806 | Received 22 Jun 2013, Published online: 20 Feb 2014
 

Abstract

A convenient and efficient protocol for the oxidation of secondary hydroxyl group to ketone using hydrogen peroxide–urea adduct and catalytic (CF3SO3)3La in ionic liquid has been developed. A number of 1,2-diols, α-hydroxyketones, and other aromatic and aliphatic secondary alcohols have been successfully oxidized to the corresponding ketones using this protocol in good yields and short reaction times.

[Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications® for the following free supplemental resource(s): Full experimental and spectral details.]

GRAPHICAL ABSTRACT

ACKNOWLEDGMENTS

P. S. and D. M. thank the University Grants Commission and the Council of Scientific and Industrial Research, respectively, New Delhi, India, for the grants of junior and senior research fellowships.

Notes

a Employing 1.0 mmol hydrobenzion, 10 mol% catalyst, 2.0 mmol UHP, and 5 mmol ionic liquid at 70 °C.

b Isolated yields.

a Reaction using 1.0 mmol alcohol, UHP, 10 mol% (CF3SO3)3La, and 5 mmol [bmim]BF4 at 70 °C for the appropriate time.

b Isolated yield.

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