OMS-2 for Aerobic, Catalytic, One-pot Alcohol OxidationWittig Reactions: Efficient Access to a, b-Unsaturated Esters

Journal article

Authors / Editors

King'ondu, Cecil

Research Areas

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Publication Details

Author list: Kona JR, King'ondu CK, Howell AR, Suib SL

Publisher: Wiley

Place: WEINHEIM

Publication year: 2014

Journal: ChemCatChem (1867-3880)

Journal acronym: CHEMCATCHEM

Volume number: 6

Issue number: 3

Start page: 749

End page: 752

Number of pages: 4

ISSN: 1867-3880

eISSN: 1867-3899

Languages: English-Great Britain (EN-GB)

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Abstract

Manganese oxide octahedral molecular sieve (OMS) materials with well-defined pores have been extensively studied over two decades due to their intriguing chemical and physical properties. OMS-2, the synthetic cryptomelane form of manganese oxide, was synthesized by a modified reflux method and was found to be highly active for obtaining ,-unsaturated esters (up to 95% yield and with high diastereoselectivities) from a variety of benzyl, heteroaryl, allyl and alkyl alcohols via one-pot alcohol oxidation-Wittig reaction. The transformation utilizes air as the stoichiometric oxidant, and the inexpensive catalyst can be recovered and reused.

Keywords

alcohols, Heterogeneous catalysis, manganese oxide, unsaturated esters, ylides

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