反应详情

To a 50 mL round-bottomed flask equipped with condenser and N2 inlet were added 404 mg (2.13 mmol) 4-fluoronaphthalene-1-boronic acid, 534 mg (2.13 mmol) 2-(2,5-dimethylpyrrolyl)-6-bromopyridine, 902 mg (8.51 mmol) sodium carbonate, 150 mg tetrakistriphenylphosphine, 10 mL ethanol, and 2 mL water. The reaction was refluxed overnight, cooled, poured into water, and extracted into ethyl acetate. After combining with another run on a larger scale, the combined organic layer was washed with brine, dried over sodium sulfate, and evaporated. The residue was chromatographed on silica gel using hexane/ethyl acetate as eluant to afford 4.72 g (85%) of an oil. 1H-NMR (δ, CDCl3): 2.25 (s, 6H), 5.92 (s, 2H), 7.1-7.2 (m, 2H), 7.4-7.6 (m, 4H), 7.95 (t, J=8, 1H), 8.12 (d, J=8, 1H), 8.19 (d, J=8, 1H); 13C-NMR (δ, CDCl3): 13.41, 106.97, 108.82, 109.02, 120.18, 120.78, 120.84, 123.42, 123.81, 123.96, 125.48, 126.20, 127.32, 127.68, 127.76, 128.56, 132.35, 133.90, 138.22, 151.87, 157.82, 158.30, 160.34; MS (%): 317 (parent+1, 100); HRMS Calculated. for C21H18N2F (parent+1): 317.1454, Found: 317.1462.

1. customTo a 50 mL round-bottomed flask equipped with condenser and N2 inlet
2. temperatureThe reaction was refluxed overnight
3. temperaturecooled
4. extractionextracted into ethyl acetate
5. washthe combined organic layer was washed with brine
6. dry with materialdried over sodium sulfate
7. customevaporated
8. customThe residue was chromatographed on silica gel