Water → Ethyl 4'-methoxy[1,1'-biphenyl]-4-carboxylate

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 4-bromobenzoic acid, ethyl ester (23.6 g, 103 mmol), 4-methoxyphenylboronic acid (15.6 g, 103 mmol), tetrakis(triphenylphosphine)palladium (0) (2.0 g, 1.73 mmol) and powdered caesium fluoride (30.0 g, 200 mmol) in 1,2-dimethoxyethane (300 mL) is heated at 85° C. for 3 h. The mixture is then treated with water (500 mL) and extracted with ethyl acetate (3×100 mL). The combined extracts are washed (saturated NaCl), dried (Na2SO4), filtered and the solvent is evaporated off under reduced pressure to yield the crude product which is purified by chromatography (silica gel, 5% ethyl acetate/95% cyclohexane) to 4′-methoxy-[1,1′-biphenyl]-4-carboxylic acid, ethyl ester as a colourless crystalline solid, m.p. 103-104° C.

Provenance & Evidence