1,4-Dichlorobenzene → 2,5-Dichlorobenzophenone

Participants

Reaction Conditions

Reaction Steps

A mixture of 5.4 g of 1,4-dichlorobenzene, 4.2 g of aluminum chloride and 0.5 ml of benzoyl chloride was stirred at 170° C. Additional benzoyl chloride, up to a total of 4 g, was slowly added to the mixture over 2.5 hours, and the resulting mixture was stirred for another hour at 170° C. The molar ratio of reactants was 1.1/1.3/ (AClCl3 :Dichlorobenzene:Benzoyl Chloride). After work-up of the crude mixture as in Examples 7 through 10, 2,5-dichlorobenzophenone was obtained in 64% yield, as determined by gas chromatography using 3-chlorobenzophenone as the internal standard.

Provenance & Evidence