Methyl iodide → 4-bromo-3-(5-fluoro-1-(2-methoxyethyl)indolin-6-yl)-1-methyl-1H-pyrrolo[2,3-b]pyridine

Participants

Reaction Steps

To a solution of 2-(6-(4-bromo-1-methyl-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-fluoroindolin-1-yl)ethanol (D41) (150 mg, 0.384 mmol) in DMSO (3 mL) was added potassium hydroxide (64.7 mg, 1.153 mmol) followed by methyl iodide (0.036 mL, 0.577 mmol). The reaction mixture was stirred at RT for 1 hour, after which an additional 0.5 eq of methyl iodide (0.012 mL) was added. The reaction mixture was stirred for an additional hour. The reaction mixture was quenched by the addition of saturated ammonium chloride aqueous solution (20 mL). The aqueous layer was extracted with DCM (3×40 mL). The organic layers were combined, passed through a hydrophobic frit and concentrated. The crude was purified by column chromatography on silica gel, eluting with a gradient of 0-40% ethyl acetate in cyclohexane to afford title compound (106 mg). LCMS (A): m/z (M+H)+ 404/406, C19H19BrFN3O requires 403/405 (acidic).

Provenance & Evidence