Process for producing 4-hydroxyacetophenone

Details Process for producing 4-hydroxyacetophenone Process for producing 4-hydroxyacetophenone

C - Chemistry, Metallurgy

07

C

260/579.3

C07C 49/825 (2006.01) B01J 27/12 (2006.01) C07C 1/00 (2006.01) C07C 5/00 (2006.01) C07C 45/45 (2006.01) C07C 49/82 (2006.01) C07C 51/23 (2006.01)

Patent

CA 1260500

Abstract A process of acetylating phenol to 4-hydroxyacetophenone by contacting phenol with about 0.9 to 2.0 moles per mole of phenol of acetic anhydride as acetylating agent in the presence of about 8 to 60 moles per mole of phenol of hydrogen. fluoride as catalyst at a temperature of reaction of about 30 to 95°C for a reaction period of at least about 10 minutes, said temperature of reaction being at least about 45°C when said number of moles of hydrogen fluoride per mole of phenol is no greater than about 12. The process generally results in phenol conversions of at least about 90% and reaction selectivities to 4-hydroxyacetophenone of at least about 70%.

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