反应详情

In a 25 mL round bottom flask equipped with a stir bar was added 6-Bromo-1-(2-(N,N-dimethylamino)ethyl)-1H-indole (0.10 g; 0.37 mmol), pyridine-3-boronic acid-1,3-propanediol cyclic ester (0.12 g; 0.74 mmol), toluene (10 mL), sodium carbonate (2M) (4 mL) and tetrakis(triphenylphosphine)palladium(0) (0.02 g; 0.04 mmol). The reaction mixture was refluxed overnight, filtered through a pad of celite and the solvent evaporated in vacuo. The residue was dissolved in ethyl acetate (30 mL) and successively washed with water (2×20 mL) and brine (20 mL). The organic phase was dried (sodium sulfate), filtered and the solvent was removed in vacuo. The crude residue was purified by column chromatography on silica gel using chloroform:ammonialmethanol (2N) (98:2) to yield the title compound as yellow oil (0.08 g; 85%). 13C NMR (CDCl3): δ 148.6, 147.8, 137.9, 136.5, 134.5, 131.4, 129.3, 128.5, 123.5, 121.6, 118.9, 107.9, 101.3, 59.1, 45.8, 44.8.

1. customIn a 25 mL round bottom flask equipped with a stir bar
2. temperatureThe reaction mixture was refluxed overnight
3. filtrationfiltered through a pad of celite
4. customthe solvent evaporated in vacuo
5. dissolutionThe residue was dissolved in ethyl acetate (30 mL)
6. washsuccessively washed with water (2×20 mL) and brine (20 mL)
7. dry with materialThe organic phase was dried (sodium sulfate)
8. filtrationfiltered
9. customthe solvent was removed in vacuo
10. customThe crude residue was purified by column chromatography on silica gel