Sodium Carbonate → tert-butyl (2R)-2-([4-amino-3-[4-(2,6-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)-pyrrolidine-1-carboxylate

HRID 1854900Notes

Reaction equation

HRID 1854900 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH2:12][C@H:13]3[CH2:17][CH2:16][CH2:15][N:14]3[C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[N:9]=[C:10](I)[C:3]=12.[F:25][C:26]1[CH:47]=[CH:46][CH:45]=[C:44]([F:48])[C:27]=1[O:28][C:29]1[CH:34]=[CH:33][C:32](B2OC(C)(C)C(C)(C)O2)=[CH:31][CH:30]=1.C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.O>[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH2:12][C@H:13]3[CH2:17][CH2:16][CH2:15][N:14]3[C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[N:9]=[C:10]([C:32]3[CH:31]=[CH:30][C:29]([O:28][C:27]4[C:44]([F:48])=[CH:45][CH:46]=[CH:47][C:26]=4[F:25])=[CH:34][CH:33]=3)[C:3]=12

Participants

5

Reactant 3

HCID 10340Sodium CarbonateHCID 669155272-(4-(2,6-Difluorophenoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 86714463tert-butyl (2R)-2-([4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)pyrrolidine-1-carboxylate

Product 1

HCID 86714466tert-butyl (2R)-2-([4-amino-3-[4-(2,6-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)-pyrrolidine-1-carboxylateYield 79%

Reagents, catalysts & solvents 1

HCID 218864351,4-Dioxane--water (1/1)Solvent

Conditions

Temperature
90 °C

Procedure

Into a 100 mL, 3-necked round-bottom flask purged and maintained in an inert atmosphere of nitrogen, was placed a solution of tert-butyl (2R)-2-([4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)pyrrolidine-1-carboxylate (300 mg, 0.68 mmol, 1.00 equiv) in 1,4-dioxane/water (60/15 mL), 2-[4-(2,6-difluorophenoxy)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (290 mg, 0.87 mmol, 1.3 equiv), sodium carbonate (180 mg, 1.68 mmol, 2.5 equiv), and tetrakis(triphenylphosphane)palladium (40 mg, 0.03 mmol, 0.05 equiv). The resulting solution was stirred for 12 h at 90° C. in an oil bath and then concentrated under vacuum. The resulting solution was diluted with 50 mL of dichloromethane, washed with water and brine. The organics were dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was loaded onto a silica gel column and eluted with dichloromethane/methanol (20/1) to give 280 mg (79%) of tert-butyl (2R)-2-([4-amino-3-[4-(2,6-difluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]methyl)pyrrolidine-1-carboxylate as a white solid.

Workup

  1. customInto a 100 mL, 3-necked round-bottom flask purged
  2. temperaturemaintained in an inert atmosphere of nitrogen
  3. concentrationconcentrated under vacuum
  4. additionThe resulting solution was diluted with 50 mL of dichloromethane
  5. washwashed with water and brine
  6. dry with materialThe organics were dried over anhydrous sodium sulfate
  7. concentrationconcentrated under vacuum
  8. washeluted with dichloromethane/methanol (20/1)

Sources & evidence

ORD record
ord-372a610128e546b792051f0cde2175af
Source dataset
uspto-grants-2015_02
Patent number
US08962831B2

Reaction notes

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