Oxidation of organic compounds using ceric ions in aqueous methanesulfonic acid
AssigneeW. R. Grace & Co.
InventorsRobert P. Kreh, Robert M. Spotnitz
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Abstract
A process for oxidizing aromatic and alkyl substituted aromatic compounds to carbonyl containing compounds by contacting an aromatic and alkyl aromatic compound with an aqueous solution of ceric methanesulfonate having from at least 1.5 to 9 molar concentration of free acid of methanesulfonic acid and at least 0.2 molar cerium ion concentration. The present process provides a highly effective means of forming the desired carbonyl containing product in good yields and high selectivity.
Claims23
A process for forming carbonyl group containing compounds from their respective organic substrate selected from aromatic and alkylaromatic compounds comprising contacting the organic substrate with an aqueous solution containing ceric methanesulfonate in the presence of at least 1.5 molar concentration of free methanesulfonic acid, said solution being substantially free of extraneous anions of other acids and having at least 0.2 molar cerium concentration.
An indirect electrochemical oxidation process to oxidize aromatic and alkyl aromatic compounds comprising
- (a) contacting an aromatic or alkyl aromatic compound with an aqueous solution containing ceric methanesulfonate and having having at least 1.5 molar concentration of free methanesulfonic acid therein, said solution having all ceric and cerous ions dissolved in said solution and at a concentration of at least 0.2 molar;
- (b) separating and recovering the carbonyl containing product from the solution to yield a spent solution rich in cerous salts;
- (c) transferring the spent solution to an electrochemical cell to cause regeneration of a solution rich in the ceric salt;
- and
- (d) repeating steps (a), (b) and (c).
A process for forming carbonyl group containing compounds from their respective organic substrate selected from aromatic and alkylaromatic compounds comprising contacting the organic substrate with an aqueous solution containing at least 0.2 M ceric methanesulfonate in the presence of at least 1.5 molar concentration of free methanesulfonic acid.
Dependencies are inferred from the claim text.