Hydrochloric Acid → 3-(1-(4-amino-3-(3-(benzyloxy)-5-fluorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)-4-(3-(4,4,5,5-tetramethyl-1,3-dioxolan-2-yl)phenyl)-1H-isochromen-1-one

Participants

Reaction Conditions

Reaction Steps

In a 100 ml round bottomed flask 3-(3-(benzyloxy)-5-fluorophenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (Intermediate G18, 400 mg, 1,194 mmol) was dissolved in 7 ml of dry DMF then K2CO3 (254 mg, 1.837 mmol) was added. After stirring for 5 min a solution of 3-(1-bromoethyl)-4-(3-(4,4,5,5-tetramethyl-1,3-dioxolan-2-yl)phenyl)-1H-isochromen-1-one (Intermediate C26, 420 mg, 0,918 mmol) in 7 ml of dry DMF was added and the clear brown mixture was heated at 60° C. for 30 min. The mixture was cooled to r.t. then 30 ml of HCl 0.5 M and 50 ml of EtOAc were added and stirred for 15 min. Phases were separated and the crude material was purified by chromatography eluting with DCM\MeOH (80/20) in DCM to give the title compound (820 mg) as a brown oil. This material was used in the next step without any further purification.

Provenance & Evidence