反应详情

温度

70 °C

A suspension of 4-bromo-2-fluorobenzyl cyanide (3.50 g, 16.35 mmol), 3-chlorobenzeneboronic acid (2.68 g, 17.17 mmol), Pd(OAc)2 (0.110 g, 0.491 mmol), K2CO3 (5.65 g, 40.9 mmol) and tetrabutylammonium bromide (5.80 g, 17.99 mmol) in water (14 ml) is allowed to stir under nitrogen at 70° C. for 1 hour. The reaction mixture is cooled to room temperature, and diluted with EtOAc. The two phases are separated. The organic layer is washed with brine, dried over MgSO4, filtered and concentrated. The obtained residue is purified by silica gel flash column chromatography (heptane/EtOAc=100:0 to 70:30) to give 2-(3′-chloro-3-fluorobiphenyl-4-yl)acetonitrile (3.52 g); HPLC retention time=1.17 minutes (condition B); 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 3.81 (s, 2H) 7.29-7.45 (m, 5H) 7.50-7.55 (m, 2H).

1. temperatureThe reaction mixture is cooled to room temperature
2. customThe two phases are separated
3. washThe organic layer is washed with brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated
7. customThe obtained residue is purified by silica gel flash column chromatography (heptane/EtOAc=100:0 to 70:30)