Chemistry: electrical and wave energy – Processes and products
Patent
1989-03-31
1991-02-05
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
204 78, 204 79, C25B 302
Patent
active
049902270
ABSTRACT:
Hydroxycarboxylic esters of the general formula ##STR1## where n is an integer from 0 to 10, R.sup.1 and R.sup.2 are each hydrogen, hydroxyl, alkoxy or an aliphatic or olefinic, straight-chain, branched or cyclic hydrocarbon radical, and R.sup.1 and R.sup.2 together may furthermore form an alkylene radical, and the hydrocarbon radicals may furthermore be substituted by halogen, hydroxyl, epoxy or nitrile, and R.sup.3 is a low molecular weight alkyl radical, are prepared by electrochemical oxidation of a hydroxyaldehyde of the general formula ##STR2## in the presence of an alcohol of the formula R.sup.3 OH and of an ionic bromide or chloride in an undivided electrolysis cell.
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Baizer et al., "Organic Electrochemistry an Introduction and a Guide", Second Edition, (1983), Marcel Dekker, Inc., New York, p. 183.
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J. Org. Chem., 50, 4967-4969 (1985), T. Shono et al.: "Electrooxidative Transformation of Aldehydes to Esters Using Mediators".
Hannebaum Heinz
Steiniger Michael
BASF - Aktiengesellschaft
Marquis Steven P.
Niebling John F.
Shurtleff John H.
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