Process for producing aromatic acylation product

Abstract

A process for producing an aromatic acylation product from an aromatic compound, an olefin and carbon monoxide, which comprises the steps of: (a) reacting an olefin with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride at a pressure of not more than 100 kg/cm.sup.2 G to prepare an acyl fluoride synthesis solution, (b) allowing the acyl fluoride synthesis solution to absorb boron trifluoride to form a complex of acyl fluoride and boron trifluoride, (c) subjecting an aromatic compound to an acylation reaction with a reaction mixture containing the complex of acyl fluoride and boron trifluoride, obtained in the step (b), to form a complex of boron trifluoride, hydrogen fluoride and an aromatic acylation compound, provided that the amount of the acyl fluoride in the complex of acyl fluoride and boron trifluoride is less than 1 mole per mole of the aromatic compound, and (d) separating the aromatic acylation compound from the complex formed in the step (c) by heating a reaction mixture obtained in the step (c).

Dependencies are inferred from the claim text.