Process for the oxidation of alcohols to aldehydes/acids/esters

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260413J, 560231, 560187, 562538, 568471, C11C 302, C11C 100, C07C 6902, C07C 6966

Patent

active

049960075

ABSTRACT:
The instant invention relates to a process for the oxidation of primary alcohols to aldehydes, acids and esters, particularly to aldehydes. In this process and alcohol and oxygen are contacted and reacted with a dihydrodihydroxynaphthalene or a dihydrodihydroxyanthracene in the presence of a Group VIII metal oxidation catalyst and optionally in the presence of a quaternary ammonium halide cocatalyst, and subsequently product aldehyde/acid/ester and the corresponding napthoquinone or anthraquinone are separated from the reaction mixture. The by-product naphthoquinone or anthraquinone is suitably recycled to the alcohol oxidation step by hydrogenating the naphthoquinone or anthraquinone to the corresponding dihydrodihydroxynaphthalene or dihydrodihydroxyanthracene by contacting it with hydrogen in the presence of a hydrogenation catalyst.

REFERENCES:
patent: 3346626 (1966-03-01), Schaeffer et al.
patent: 4052424 (1977-10-01), Vanderspurt
patent: 4126748 (1978-11-01), Scholz et al.
Yokota et al., Japan Kokai 62,212,350, Sep. 18, 1987, Chemical Abstracts, vol. 109, 1988 Abstract 210517u.

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