Patent ID: 6881865
Filing Date: 2005-04-19
Classification: C07C

Abstract:
1. 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; and (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.