1,2-Dichloroethane → Ethanone, 1-(4-methoxyphenyl)-2-[3-(trifluoromethyl)phenyl]-

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Reaction Steps

Anisole (32.4 g) and aluminium trichloride (36.0 g) are added to 1,2-dichloroethane (240 ml). The mixture is cooled to -5° and (3-trifluoromethylphenyl)-acetyl chloride (66.8 g) is slowly added. The mixture is stirred for 11/2 hours and poured into a mixture of crushed ice (400 g) and water (150 ml). After heating to room temperature, the compound is extracted with ether (3×200 ml). The combined organic phases are washed with a 2% aqueous solution of sodium hydroxide (200 ml and with water (3×200 ml), dried over magnesium sulphate and the solvents are removed in vacuo. The residue is recrystallised from hexane. The product is dried in vacuo to constant weight to yield 2-(3-trifluoromethylphenyl)-1-(4-methoxyphenyl)-ethanone, m.p. 94°-95°.

Provenance & Evidence