Sodium Carbonate → Methyl 2'-methoxy-2-methylbiphenyl-4-carboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-methyl-4-bromobenzoic acid methyl ester (2.0 g, 8.7 mmol), 2-methoxyphenyl boronic acid (1.32 g, 8.7 mmol) and sodium carbonate (4.1 g, 38.7 mmol) in toluene:ethanol:water (50 mL:25 mL:25 mL) was purged with nitrogen for 1 hour. After addition of the tetrakis(triphenylphosphine) palladium(0) catalyst (0.50 g, 0.43 mmol), the reaction mixture was heated at 100° C. overnight. After cooling, the reaction was filtered through Celite and the cake washed with ethyl acetate. The organic layer was washed with water, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to give a brown oil. Purification by flash chromatography on silica gel with a solvent gradient from 20% to 50% dichloromethane in hexane gave 2.0 g of product as a colorless oil.

Provenance & Evidence