反应详情

温度

80 °C

To a mixture of 2-fluoro-3-iodo-5-isopropylpyridine and 485 mg (4.13 mmol) of Zn(CN)2 in 15 mL of DMF (degassed) was added 360 mg (0.312 mmol) of Pd(PPh3)4. The mixture was heated at 80° C. under Ar for 19 h. The mixture was diluted with EtOAc, and the organic layer was washed with 10% NH4OH (2×10 mL), H2O (3×), and brine. The organic layer was dried over Na2SO4, filtered, and concentrated. Purification by flash silica gel chromatography (5% Et2O/hexanes) provided 384 mg of pure 2-fluoro-5-isopropylnicotinonitrile as a yellow liquid.

1. washthe organic layer was washed with 10% NH4OH (2×10 mL), H2O (3×), and brine
2. dry with materialThe organic layer was dried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated
5. customPurification by flash silica gel chromatography (5% Et2O/hexanes)