Potassium Carbonate → 1-benzenesulfonyl-3-(3,4-dimethoxy-phenyl)-1H-indole

関与物質

反応条件

反応手順

1-Benzenesulfonyl-3-bromoindole 20 (350 mg, 1.0 mmol) was dissolved in tetrahydrofuran (6 mL). Into the solution was added 3,4-dimethoxyphenyl boronic acid (379 mg, 2.1 mmol), tetrakis(triphenylphosphine)palladium(0) (60 mg, 0.05 mmol) and 1 M potassium carbonate (3 mL). The reaction mixture was heated in a CEM Discover microwave instrument at 120° C. for 10 minutes. The reaction mixture was concentrated under reduced pressure and partioned between ethyl acetate and saturated sodium bicabonate. The organic portion was dried over anhydrous magnesium sulfate, and filtered. The filtrate was adsorbed onto silica gel and purified by flash chromatography (5%-50% ethyl acetate:hexanes) to provide the desired product, 19, (359 mg, 88%).

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