Potassium Carbonate → tert-butyl 5-(2-(4-fluorophenyl)-6-(N'-hydroxycarbamimidoyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)pentanoate

Participants

Reaction Steps

Hydroxylamine hydrochloride (183 mg, 2.64 mmol) was added to a stirred, room temperature mixture of tert-butyl 5-(6-cyano-2-(4-fluorophenyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)pentanoate (185 mg, 0.440 mmol) and K2CO3 (365 mg, 2.64 mmol) in MeOH (20 mL) and the mixture was stirred at room temperature for overnight. The mixture was diluted with dichloromethane (60 mL), washed with aqueous ammonium chloride (saturated, 1×20 mL), dried (MgSO4), filtered and the solvent was evaporated under reduced pressure to give tert-butyl 5-(2-(4-fluorophenyl)-6-(N′-hydroxycarbamimidoyl)-1-oxo-1,2-dihydroisoquinolin-3-yl)pentanoate (200 mg, 0.441 mmol) as an off white solid.

Provenance & Evidence