m-Chloroperbenzoic acid → HCID 178526243, compound

Participants

Reaction Steps

A solution of 7-azaindole 22-1 (30.6 g, 259 mmol) in methylene chloride (300 mL) was treated with mCPBA (75.6 g, 285 mmol) at room temperature for 12 h. The reaction mixture was washed with saturated aqueous NaHCO3 (3×100 mL), dried (Na2SO4), filtered, and concentrated in vacuo. Silica gel chromatography (100×250 mm silica, 10% to 50% EtOAc/hexanes) afforded 23.5 g of 1H-pyrrolo[2,3-b]pyridine 7-oxide as a white solid.

Provenance & Evidence