1,1,1,2-Tetrachloroethane → HCID 20296846, compound

Participants

Reaction Steps

The procedures and equipment used in this monomer preparation are as described in Example I. A solution of 94.5 g m-anisoyl chloride (0.554 mole) in 113 ml of tetrachloroethane was added dropwise to a stirred, cooled mixture of 80.7 g o-methylanisole (0.661 mole), 94.5 g anhydrous aluminum chloride, and 113 ml tetrachloroethane, keeping the temperature of about 15° C. The mixture stood at room temperature for 24 hr. After adding ice and extracting with methylene chloride as in the preparation of 3,4'-methoxybenzophenone of Example I, an impure liquid was obtained from which the 3,4'-dimethoxy-4-methylbenzophenone was obtained by fractional distillation in a 25 cm Vigreux column at 198° C. and 2.0 torr (0.27 kPa) pressure. Yield was 114 g (0.445 mole).

Provenance & Evidence