Potassium Carbonate → HCID 10236192, compound

Participants

Reaction Conditions

Reaction Steps

1-Pyridin-2-yl-1H-pyrazol-3-yl trifluoromethanesulfonate (0.211 g, 0.72 mmol), 3-fluorobenzonitrile (0.111 g, 0.76 mmol) and potassium carbonate (0.209 g, 1.51 mmol) in a mixture of ethyleneglycol dimethyl ether (20 mL) and water (4 mL) was degassed by argon bubbling for 15 min., then tetrakis(triphenylphosphine)palladium(0) (20 mg, 0.017 mmol) was added the resulting solution degassed for a further 15 min. The solution was stirred at 65° C. for 12 h. The reaction mixture was quenched with water (30 mL), then extracted with EtOAc (3×30 mL) and washed with brine. The combined organic phase was dried over Na2SO4 and concentrated in vacuo. The crude residue was chromagraphed on silica gel eluting with EtOAc:hexane (2:3) to afford a white solid which was recrystallized from EtOAc-hexane to give 3-(1-pyridin-2-yl-1H-pyrazol-3-yl)benzonitrile as a white solid. 1H NMR (CD3Cl, 300 MHz) δ 8.64 (d, 1H), 8.44 (d, 1H), 8.25 (s, 1H), 8.14 (d, 1H), 8.10 (d, 1H), 7.87 (t, 1H), 7.64 (d, 1H), 7.55 (t, 1H), 7.24 (dd, 1H), 6.80 (d, 1H). MS (ESI) 247 (M++H).

Provenance & Evidence