Hydrochloric Acid → 1-(4-(Cyclohexylamino)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-5-yl)ethanone

Participants

Reaction Steps

5-Bromo-N-cyclohexyl-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-4-amine (160 mg, 0.377 mmol) in toluene (3 mL) was stirred with bis(triphenylphosphine)palladium (II) dichloride (35 mg, 0.050 mmol) and tributyl(1-ethoxyvinyl)tin (382 μL, 1.13 mmol) at 75° C. for 3 hours. The reaction mixture was allowed to cool to room temperature and stirred with 1 M hydrochloric acid (2 mL) and potassium fluoride (100 mg, 1.73 mmol) at room temperature for 30 minutes. The reaction mixture was filtered, and the solid was washed with ethyl acetate. The filtrate and the washings were mixed with water and extracted with ethyl acetate, and the organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=20/1→5/1 (v/v)) to give the title compound as a yellow oil (58 mg, yield 40%).

Provenance & Evidence