Triethylamine → 8-Chloro-1-(2-fluoro-4-iodophenyl)-5-methyl-3,5-dihydrodiimidazo[4,5-b:4',5'-e]pyridin-2(1H)-one

Participants

Reaction Steps

To a suspension of 7-chloro-6-(2-fluoro-4-iodophenylamino)-3-methyl-3H-imidazo[4,5-b]pyridine-5-carboxylic acid (2.75 g, 6.16 mmol) in toluene (80 ml) is added triethylamine (2.57 ml, 18.5 mmol) and diphenylphosphoryl azide (1.56 ml, 7.7 mmol). The reaction is heated at reflux for 4 h. The mixture is cooled to room temperature and concentrated to dryness. Silica gel chromatography yields the title compound.

Provenance & Evidence