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Water → (4-(7-bromo-1-(2,6-difluorophenyl)-4-methoxy-1H-pyrazolo[4,3-c]pyridin-3-yl)phenyl)acetonitrile

HRID 2206112
Notes
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Reaction equation

HRID 2206112 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[N:9]1[C:17]2[CH:16]=[CH:15][N:14]=[C:13]([O:18][CH3:19])[C:12]=2[C:11]([C:20]2[CH:25]=[CH:24][C:23]([CH2:26][C:27]#[N:28])=[CH:22][CH:21]=2)=[N:10]1.C1C(=O)N([Br:36])C(=O)C1.O>CN(C=O)C>[Br:36][C:16]1[C:17]2[N:9]([C:3]3[C:4]([F:8])=[CH:5][CH:6]=[CH:7][C:2]=3[F:1])[N:10]=[C:11]([C:20]3[CH:25]=[CH:24][C:23]([CH2:26][C:27]#[N:28])=[CH:22][CH:21]=3)[C:12]=2[C:13]([O:18][CH3:19])=[N:14][CH:15]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 962WaterHCID 67184N-bromobutanimideHCID 117987845(4-(1-(2,6-difluorophenyl)-4-methoxy-1H-pyrazolo[4,3-c]pyridin-3-yl)phenyl)acetonitrile

Product 1

HCID 117987645(4-(7-bromo-1-(2,6-difluorophenyl)-4-methoxy-1H-pyrazolo[4,3-c]pyridin-3-yl)phenyl)acetonitrileYield 89.9%

Reagents, catalysts & solvents 1

HCID 6228
Dimethylformamide
Solvent

Procedure

To a solution of (4-(1-(2,6-difluorophenyl)-4-methoxy-1H-pyrazolo[4,3-c]pyridin-3-yl)phenyl)acetonitrile (148.1 mg) obtained in Step A of Example 39 in DMF (5 mL) was added NBS (77 mg) at 0° C., and the mixture was allowed to be warmed to room temperature, and stirred overnight. The reaction mixture was poured into water, and the mixture was extracted twice with ethyl acetate. The organic layers were combined, washed with saturated brine, and dried over sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (161 mg).

Workup

  1. extractionthe mixture was extracted twice with ethyl acetate
  2. washwashed with saturated brine
  3. dry with materialdried over sodium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record
ord-f39319fbdd94404db011c74bc9260490
Source dataset
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09371320B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes