Potassium Carbonate → N-[4-(2-Fluoro-phenyl)-pyridin-3-yl]-N-methyl-3,5-bis-trifluoromethyl-benzamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A solution of N-(4-bromo-pyridin-3-yl)-N-methyl-3,5-bis-trifluoromethyl-benzamide (120 mg, 0.281 mmol), 2-fluorophenylboronic acid (472 mg, 0.337 mmol, CAS RN 1993-03-9) and K2CO3 (155 mg, 1.124 mmol) in a mixture of water:ethanol:toluene (10 mL; 0.5:1:3) was thoroughly degassed for 30 min at 25° C. under an atmosphere of argon in a sealed tube. Pd(PPh3)4 (32.5 mg, 0.0281 mmol, CAS RN 14221-01-3) was then added to the mixture, and continued degassing for another 15 min. The reaction mixture was heated to 90-100° C. for 14 hours. After the completion of reaction, the mixture was filtered though a bed of celite and the residue washed with EtOAc. The combined filtrates were evaporated in vacuo and the resultant residue was diluted with EtOAc. The organic layer washed with brine, dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The crude residue thus obtained was purified by preparative HPLC to afford the desired compound as an off-white solid (69%). MS (ESI): m/z=443.2 [M+H]+.

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