Phthalimide → HCID 71258235, compound

Participants

Reaction Steps

{4-[(1-Benzylpiperidin-4-yl)amino]-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-pyrrolo[2,3-b]pyridin-5-yl}methanol (212 mg, 0.454 mmol), phthalimide (134 mg, 0.909 mmol) and triphenylphosphine (238 mg, 0.909 mmol) in tetrahydrofuran was stirred at room temperature for 30 minutes and with diisopropyl azodicarboxylate (184 mg, 0.909 mmol) for one day. The reaction mixture was concentrated under reduced pressure and, after addition of water, extracted with ethyl acetate. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=1/1/(v/v)) to remove triphenylphosphine oxide. The residue was dissolved in ethanol (10 mL) and stirred with hydrazine monohydrate (1.00 mL, 11.6 mmol) at 80° C. for 1 hour. The reaction mixture was concentrated under reduced pressure and, after addition of water, extracted with chloroform, and the organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=1/1 (v/v)) to give the title compound (51.1 mg, yield 24%).

Provenance & Evidence