Trifluoroacetic acid → 3-[4-(2-fluorophenoxy)-phenyl]-1-[(3R)-piperidin-3-yl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

HRID 1843349Notes

Reaction equation

HRID 1843349 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([C@@H:25]3[CH2:30][CH2:29][CH2:28][N:27](C(OC(C)(C)C)=O)[CH2:26]3)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][C:14]([O:17][C:18]4[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=4[F:24])=[CH:13][CH:12]=3)[C:3]=12.FC(F)(F)C(O)=O>ClCCl>[F:24][C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][C:18]=1[O:17][C:14]1[CH:13]=[CH:12][C:11]([C:10]2[C:3]3[C:4](=[N:5][CH:6]=[N:7][C:2]=3[NH2:1])[N:8]([C@@H:25]3[CH2:30][CH2:29][CH2:28][NH:27][CH2:26]3)[N:9]=2)=[CH:16][CH:15]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86714480HCID 86714480, compound

Product 1

HCID 867144813-[4-(2-fluorophenoxy)-phenyl]-1-[(3R)-piperidin-3-yl]-1H-pyrazolo[3,4-d]pyrimidin-4-amineYield 62%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Into a 100 mL, round-bottom flask purged and maintained under an inert atmosphere of nitrogen, was placed a solution of tert-butyl (3R)-3-[4-amino-3-[4-(2-fluorophenoxy)phenyl]-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidine-1-carboxylate (200 mg, 0.40 mmol, 1.00 equiv) in dichloromethane (20 mL), and trifluoroacetic acid (10 g, 87.70 mmol, 221.25 equiv). The resulting solution was stirred overnight at room temperature and then concentrated under vacuum. The pH value of the solution was adjusted to 8-10 with 10% aqueous sodium carbonate. The solution was extracted with dichloromethane and the organic layers were combined and dried over anhydrous sodium sulfate and concentrated under vacuum to give 0.1 g (62%) of 3-[4-(2-fluorophenoxy)phenyl]-1-((3R)-piperidin-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine as a light yellow solid.

Workup

  1. customInto a 100 mL, round-bottom flask purged
  2. temperaturemaintained under an inert atmosphere of nitrogen
  3. concentrationconcentrated under vacuum
  4. extractionThe solution was extracted with dichloromethane
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-e94ff115aa104fd7aeac9db5ecab493e
Source dataset
uspto-grants-2015_02
Patent number
US08946241B2

Reaction notes

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