5-bromo-1H-pyrrolo[2,3-b]pyridine → 5-methoxy-1H-pyrrolo[2,3-b]pyridine

Participants

Reaction Conditions

Reaction Steps

To a mixture of 5-bromo-7-azaindole (1 g, 0.005 mol) in N,N-Dimethylformamide (20 mL) and methanol (20 mL) were added sodium methoxide (13 g, 0.24 mol) and Copper (I) bromide (0.7 g, 0.0048 mol) at room temperature. The reaction mixture was stirred at 120° C. under nitrogen for 3 hours. The reaction mixture was concentrated and the residue was dissolved in ethyl acetate and water. The organic layer was collected, washed with a solution of ammonium chloride and ammonium hydroxide (4:1), brine, and dried over magnesium sulfate. After removal of solvent, the residue was purified by silica gel column chromatography eluting with ethyl acetate in hexane to provide the compound as a white solid (81, 0.4 g, 50%). MS (ESI) [M+H+]+=149.09.

Provenance & Evidence