Potassium Carbonate → Methyl E-4-{3-(4-cyanobenzyl)-5-[2-(4'-trifluoromethylbiphenyl-4-ylmethoxy)phenyl]pent-4-enyl}benzoate

Participants

Reaction Steps

A solution of 300 mg (0.73 mmol) of methyl 4-[(4E)-3-(4-cyanobenzyl)-5-(2-hydroxyphenyl)pent-4-en-1-yl]benzoate in 30 ml of dry acetonitrile is mixed with 236.8 mg (0.87 mmol) of 4-(chloromethyl)-4′-(trifluoromethyl)biphenyl and 151 mg (1.09 mmol) of anhydrous potassium carbonate and heated under reflux for 12 hours. The mixture is then concentrated to dryness. The residue is taken up in ethyl acetate, washed with water and saturated sodium chloride solution and dried over sodium sulfate. The organic phase is concentrated. The resulting crude product is purified by flash chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 7:3). 331 mg (0.51 mmol, 70% of theory) of a solid are obtained.

Provenance & Evidence