Method for preparing cyclohexyl phenyl ketone from 1,3- butadiene and acrylic acid
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsYoung J. Joo, Jin Eok Kim, Jeong Im Won, Tae Yi Kang
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Abstract
Disclosed is a synthesis method of cyclohexyl phenyl ketone with a high selectivity and a high yield from 1,3-butadiene and acrylic acid in the presence or absence of benzene or a non-aromatic organic solvent in the same reaction without a step of separating or purifying intermediates, the synthesis method including sequentially carrying out a [2+4] Diels-Alder reaction, a hydrogenation reaction, a chlorination reaction and a Friedel-Crafts reaction in the presence/absence of benzene or a non-aromatic organic solvent without separation of intermediates.
Claims11
A method for preparing a cyclohexyl phenyl ketone from a 1,3-butadiene and an acrylic acid, the method comprising:
- (a) carrying out a [2+4] Diels-Alder reaction of the 1,3-butadiene and the acrylic acid in the presence or absence of a solvent to prepare a 3-cyclohexene-1-carboxylic acid;
- (b) carrying out a hydrogenation reaction of the 3-cyclohexene-1-carboxylic acid to prepare a cyclohexanecarboxylic acid;
- (c) carrying out a chlorination reaction in the solution of the cyclohexanecarboxylic acid without separation or purification of the cyclohexanecarboxylic acid to prepare a cyclohexanecarbonyl chloride;
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- (d) continuously carrying out a Friedel-Crafts reaction of the cyclohexanecarbonyl chloride in the same reactor without separation or purification of an intermediate to prepare a cyclohexyl phenyl ketone.
Dependencies are inferred from the claim text.