Triethylamine → 3-[(2R)-2-([4-amino-3-[4-(3,5-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)pyrrolidin-1-yl]-3-oxopropanenitrile

Participants

Reaction Conditions

Reaction Steps

Into a 100 mL, round-bottom flask, was placed 3-[4-(3,5-difluorophenoxy)phenyl]-1-[(2R)-pyrrolidin-2-ylmethyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (185 mg, 0.44 mmol, 1.00 equiv), 2-cyanoacetic acid (30.7 mg, 0.36 mmol, 0.80 equiv), HATU (138 mg, 0.36 mmol, 0.80 equiv), triethylamine (91 mg, 0.90 mmol, 2.00 equiv), and N,N-dimethylformamide (50 mL). The resulting solution was stirred for 3 h at 25° C. and then extracted with ethyl acetate and the organic layers combined and concentrated under vacuum. The residue was loaded onto a silica gel column and eluted with dichloromethane/methanol (50/1) to give 101 mg (47%) of 3-[(2R)-2-([4-amino-3-[4-(3,5-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)pyrrolidin-1-yl]-3-oxopropanenitrile as a off-white solid.

Provenance & Evidence