1-Hydroxybenzotriazole → 5-(2-Fluoro-4-iodophenylamino)-imidazo[1,5-a]pyridine-6-carboxylic acid (2-vinyloxyethoxy)-amide

Participants

Reaction Steps

To a solution of 5-(2-fluoro-4-iodophenylamino)-imidazo[1,5-a]pyridine-6-carboxylic acid (2.10 g, 5.29 mmol) and O-(2-vinyloxyethyl)-hydroxylamine (0.87 g, 8.46 mmol) in DMF (30 mL) was added EDCI hydrochloride (1.31 g, 6.90 mmol), HOBt (0.93 g, 6.90 mmol) and DIPEA (1.17 mL, 6.90 mmol). The reaction mixture was stirred at room temperature for 5 hours before being concentrated in vacuo. The resultant residue was dissolved in 1:1 tert-butylmethylether:ethyl acetate (20 mL) and aqueous saturated sodium hydrogen carbonate solution (20 mL) was added. The resultant mixture was sonicated until a precipitate formed, the precipitate was collected by filtration and dried in vacuo at 45° C. to yield the title compound as a tan solid (1.55 g, 60%). LCMS (Method B): RT=2.80 min, M+H+=483.

Provenance & Evidence