Hydroxyamine hydrochloride → 5-(4-Chloro-phenyl)-6-(4-isoxazol-5-yl-phenyl)-1-phenyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

Participants

Reaction Conditions

Reaction Steps

To a slurry of 5-(4-chloro-phenyl)-6-[4-(3-dimethylamino-acryloyl)-phenyl]-1-phenyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one (8.0 mg, 0.016 mmol) in MeOH (0.5 mL) is added NH2OH.HCl (1.5 mg, 0.022 mmol). The mixture is heated to 80° C. for 2 h and cooled down to room temperature. After concentration under vacuum, the residue is purified by preparative LC/MS to provide the titled compound 5-(4-Chloro-phenyl)-6-(4-isoxazol-5-yl-phenyl)-1-phenyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one as white solid.

Provenance & Evidence