Cyanoacetic acid → 3-[(3R)-3-[4-amino-3-[4-(3,5-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-oxopropanenitrile

Into a 100-mL round-bottom flask, was placed a solution of 3-[4-(3,5-difluorophenoxy)phenyl]-1-[(3R)-piperidin-3-yl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (210 mg, 0.50 mmol, 1.00 equiv) in dichloromethane (50 mL), 2-cyanoacetic acid (63 mg, 0.74 mmol, 1.50 equiv), and 1-[(1H-imidazol-1-yl)carbonyl]-1H-imidazole (120 mg, 0.74 mmol, 1.50 equiv). The resulting solution was stirred for 24 h at room temperature and then diluted with dichloromethane. The resulting mixture was washed with NH4Cl and dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was loaded onto a silica gel column and eluted with dichloromethane/methanol (100:1) to give 150 mg (62%) of 3-[(3R)-3-[4-amino-3-[4-(3,5-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-oxopropanenitrile as a white solid.

1. customInto a 100-mL round-bottom flask, was placed
2. washThe resulting mixture was washed with NH4Cl
3. dry with materialdried over anhydrous sodium sulfate
4. concentrationconcentrated under vacuum
5. washeluted with dichloromethane/methanol (100:1)

ORDレコード

ord-14aad9dfab4f46a888cbc2fa2b12cc55

出典データセット

uspto-grants-2015_02

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08946241B2