1,2-Dibromobenzene → 5-Amino-2'-bromobiphenyl-3-carboxylic acid methyl ester

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture of (3-amino-5-methoxycarbonylphenyl)boronic acid (1.02 g, 5.23 mmol), 1,2-dibromobenzene (2.47 g, 10.46 mmol), potassium carbonate (5.52 g, 40 mmol) and tetrakis(triphenylphosphine)palladium(0) (606 mg, 0.523 mmol) in 1:1 toluene/ethanol (30 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 (3:17) to yield the title compound as a colourless gum (1.21 g, 76%).

Herkunft & Nachweise