Sodium Carbonate → Methyl 4'-[2-[benzyl(tert-butoxycarbonyl)amino)ethyl]-3-(isopropylamino)-4-biphenylcarboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 4-bromo-2-(isopropylamino)benzoate (433 mg) in 1,2-dimethoxyethane (6.5 ml) were added [4-[2-[benzyl(tert-butoxycarbonyl)amino]ethyl]phenyl]boronic acid (848 mg), tetrakis(triphenylphosphine)palladium (184 mg) and aqueous solution of sodium carbonate (2M, 3.5 ml), and the mixture was stirred at 70° C. for 2 hours under nitrogen. The mixture was diluted with ethyl acetate and water. The organic layer was separated, washed with brine, dried over magnesium sulfate and evaporated under reduced pressure. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=17/3) to give methyl 4′-[2-[benzyl(tert-butoxycarbonyl)amino]ethyl]-3-(isopropylamino)-4-biphenylcarboxylate (768 mg).

Provenance & Evidence