Potassium Carbonate → 4'-bromo-3'-methyl-N,N-diphenyl-[1,1'-biphenyl]-4-amine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture of 4-diphenylaminophenyl boronic acid (1.25 g, 4.33 mmol), 2,5-dibromotoluene (2.16 g, 8.65 mmol), Pd(PPh3)4 (0.25 g, 0.22 mmol) and K2CO3 (1.38 g, 10 mmol) in dioxane/water (50 mL/9 mL) was degassed and heated at 80° C. for 15 hours. The resulting mixture was mixed with ethyl acetate/brine. The organic phase was dried over Na2SO4, loaded on silica gel, and purified by flash column (hexanes to hexanes/dichloromethane 9:1 to 4:1). The desired fraction was collected and concentrated. After removal of solvent, a white solid (Compound 18) was obtained (1.2 g, in 67% yield).

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