Sodium Carbonate → 4-bromo-1-isopropyl-3-(1-methylindolin-6-yl)-1H-pyrrolo[2,3-b]pyridine

Participants

Reaction Conditions

Reaction Steps

To a stirred suspension of 4-bromo-3-iodo-1-isopropyl-1H-pyrrolo[2,3-b]pyridine (D10) (2.5 g, 6.85 mmol) and 1-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)indoline (2.130 g, 8.22 mmol) in ACN (15 mL), DMF (15.00 mL) and DCM (7.50 mL) was added 2M sodium carbonate aq. solution (34.2 mL, 68.5 mmol). Bis(triphenylphosphine)palladium(II) chloride (0.577 g, 0.822 mmol) was then added to the solution and the resulting mixture was heated at 55° C. for ca. 1 hour. Temperature was raised to 65° C. and heated for another 1 hour. The reaction was allowed to cool to RT and diluted with DCM (70 mL). The organic layer was separated and the aqueous layer was extracted with DCM (2×50 mL). The combined organics were dried and concentrated down. The residue obtained was purified on silica using 0-10% ethyl acetate/cyclohexane to afford the title compound (1.73 g). LCMS (A): m/z (M+H)+ 370/372, C19H20BrN3 requires 369/371 (acidic).

Provenance & Evidence