Potassium Carbonate → 1-(4-{4-[3-(1H-indol-5-yl)-1H-pyrrolo[2,3-b]pyridin-5-yl]-benzyl}-piperazin-yl)-ethanone

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Reaction Steps

2-(4-Bromomethyl-phenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane (100 mg, 0.337 mmol), N-acetylpiperazine (47 mg, 0.37 mmol) and K2CO3 (93 mg, 0.675 mmol) were combined in DMF (2.5 ml) and stirred overnight at room temperature. The reaction was quenched by the addition of water, extracted with DCM and dried. The residue was taken up in CH3CN (2 ml), Intermediate B (120 mg, 0.275 mmol) and dichlorobis(triphenylphosphine)palladium (II) (10 mg, 0.013 mmol) were added and the reaction was heated to 150° C. in a microwave reactor for 20 min. The mixture was partitioned between water and DCM, the organic phase dried, evaporated and purified by silica gel chromatography using 0-5% MeOH:DCM. 53 mg (46%) of the title compound were obtained. MS ESI (m/z): 450.4 (M+1)+, calc. 449.

Provenance & Evidence