Process for producing 2-hydroxyphenyl lower alkyl ketones

Details Process for producing 2-hydroxyphenyl lower alkyl ketones Process for producing 2-hydroxyphenyl lower alkyl ketones

C - Chemistry, Metallurgy

07

C

260/579.3

C07C 49/825 (2006.01) B01J 29/40 (2006.01) C07C 45/46 (2006.01)

Patent

CA 1261877

71529-15 ABSTRACT OF THE INVENTION The production of 2-hydroxyphenyl lower alkyl ketones, e.g. 2-hydroxyacetophenone, by reaction of phenol and a lower alkanoic acid, e.g. acetic acid, is carried out by contacting the phenol and acid at an elevated temperature with a ZSM-5 zeolite catalyst having the formula: 0.9?0.2M2/nO:W2O3:5-100YO2:ZH2O wherein M is a cation, n is the valence of said cation, W is selected from the group consisting of aluminum and gallium, Y is selected from the group consisting of silicon and germanium, and z is from 0 to 40, and in which at least about 80% of the cations are replaced with hydrogen ions. Preferably the cata- lyst has the formula: 0.9?0.2M2/nO Al2O3 5-100SiO2:ZH2O and M is selected from the group consisting of alkali metal cations and tetraalkylammonium cations, the alkyl groups of which preferably contain 2-5 carbon atoms.

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