Potassium Carbonate → 2-Benzyloxy-5''-butyrylamino-5-trifluoromethyl[1,1';2',1'']terphenyl-3''-carboxylic acid ethyl ester

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-benzyloxy-5-trifluoromethyl-phenyl-boronic acid (38 mg, 0.13 mmol), 2′-bromo-5-butyrylamino-biphenyl-3-carboxylic acid methyl ester (45 mg, 0.12 mmol), potassium carbonate (138 mg, 1 mmol) and tetrakis(triphenylphosphine)palladium(0) (14 mg, 0.012 mmol) in 1:1 toluene/ethanol (3 ml) was stirred and heated at 90° C. under nitrogen for 2 hours. After cooling the mixture was diluted with diethyl ether and water and the organic phase dried (MgSO4) and evaporated to dryness. The residue was purified using Biotage with ethyl acetate/iso-hexane (1:4) to yield the title compound as a colourless gum (51 mg, 76%).

Provenance & Evidence