Tetrahydrofuran → 3-Trifluoromethyl-4'-benzyloxy-alpha-ethyl-benzhydrol

Participants

Reaction Steps

To a Grignard reactant prepared from 1.46 g. of magnesium turnings and 13.5 g. of 3-trifluoromethyl-bromobenzene in 34 ml. of dry tetrahydrofurane a solution of 9.61 g. of 4-benzyloxy-propiophenone in 50 ml. of dry tetrahydrofurane is added dropwise, under moderate reflux. The reaction mixture is slightly boiled for a further hour. The progress of the reaction can be monitored by thin layer chromatography. After termination of the reaction the reaction mixture is cooled and poured onto a mixture of glacial acetic acid and ice. The solvent phase is washed with a saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent is distilled off in vacuo. 15 g. of the named compound are obtained, which can be recrystallized from n-heptane. Melting point: 50°-51° C.

Provenance & Evidence