Hydrochloric Acid → 5-(4-chloro-phenyl)-1-phenyl-6-[4-(1H-pyrazol-3-yl)-phenyl]-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one

Participants

Reaction Conditions

Reaction Steps

To a suspension of 5-(4-chloro-phenyl)-6-[4-(3-dimethylamino-acryloyl)-phenyl]-1-phenyl-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one (11 mg, 0.022 mmol) in MeOH (0.5 mL) is added hydrazine hydrate (2.0 mg, 0.04 mmol) and HCl (4 M in dioxane, 10 μL, 0.04 mmol), The mixture is heated to 80° C. for 2 h and cooled down to room temperature. The mixture is concentrated and purified by preparative LC/MS to provide the titled compound 5-(4-chloro-phenyl)-1-phenyl-6-[4-(2H-pyrazol-3-yl)-phenyl]-1,5-dihydro-pyrazolo[3,4-d]pyrimidin-4-one as white solid. HPLC-MS calculated for C26H17ClN6O (M+H1): 465.1. Found: 465.1.

Provenance & Evidence