Water → Dibenzyl-(2,4-difluoro-phenyl)-amine

HRID 1098368Notes

Reaction equation

HRID 1098368 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[NH2:9].C(=O)([O-])[O-].[K+].[K+].[CH2:16](Br)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.O>CN(C)C=O>[CH2:16]([N:9]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[C:3]1[CH:4]=[CH:5][C:6]([F:8])=[CH:7][C:2]=1[F:1])[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1

Participants

6

Reactant 4

HCID 962WaterHCID 7498Benzyl BromideHCID 97092,4-DifluoroanilineHCID 11430Potassium Carbonate

Product 1

HCID 58086650Dibenzyl-(2,4-difluoro-phenyl)-amine

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To 2,4-difluoro-phenylamine (42, 10.0 g, 77.4 mmol) in N,N-dimethylformamide (130 mL) were added potassium carbonate (32.1 g, 0.23 mol) and benzyl bromide (21.2 mL, 0.18 mol). The reaction was stirred at room temperature overnight. The reaction was poured into water and extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate and filtrated. The filtrate was concentrated and purified by silica gel column chromatography eluting with 10% ethyl acetate in hexane. The appropriate fractions were combined and concentrated to provide the compound (52, 12.0 g, 50%). MS (ESI) [M+H+]+=310.2.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltrated
  5. concentrationThe filtrate was concentrated
  6. custompurified by silica gel column chromatography
  7. washeluting with 10% ethyl acetate in hexane
  8. concentrationconcentrated
  9. customto provide the compound (52, 12.0 g, 50%)

Sources & evidence

ORD record
ord-a0ccb88c2f9c460c9b8c35309d7b1bca
Source dataset
uspto-grants-2012_03
Patent number
US08143271B2

Reaction notes

Loading…