1,1'-Carbonyldiimidazole → 1-Methyl-1h-imidazo[4,5-b]pyridin-2(3h)-one

Participants

Reaction Steps

CDI (2.251 g) was added to a solution of N3-methylpyridine-2,3-diamine (1.14 g) in THF(dry) (50 mL) at room temperature. The mixture was stirred at room temperature under a dry atmosphere (CaCl2 tube) over weekend. The reaction mixture was concentrated in vacuo. The residue was purified by column chromatography (silica gel, eluted with 0%-100% EtOAc in hexane) to give 1-methyl-1,3-dihydro-2H-imidazo[4,5-b]pyridin-2-one (1.1 g) as a white solid.

Provenance & Evidence