Trifluoroacetic acid → 4-Octyl-2'-fluoro-4'-bromobiphenyl

Participants

Reaction Steps

A reaction vessel was charged with 3.75 g of 4-octanoyl-2'-fluoro-4'-bromobiphenyl and 20 ml of trifluoroacetic acid. To the mixture was added dropwise 2.4 g of triethylsilane with stirring at room temperature. After stirring for 6 hours, the reaction liquid was poured into water and the mixture was extracted with benzene. The benzene extract was washed successively with water, an aqueous solution of sodium hydrogen carbonate and water, and then dried over Glauber's salt. The solvents were distilled off and the residue was distilled in a glass tube oven (GTO) to obtain 2.56 g (71.1%) of 4-octyl-2'-fluoro-4'-bromobiphenyl. GTO-set temperature: 150° C./0.2 mmHg.

Provenance & Evidence