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3-Fluoro-4-(trifluoromethyl)benzaldehyde → [(3RS,4SR)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amine

HRID 2066979
Notes
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Reaction equation

HRID 2066979 reaction equation
[CH2:1]([N:8]1[CH2:12][CH:11]([C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)[CH:10]([NH:21][CH3:22])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[F:23][C:24]1[CH:25]=[C:26]([CH:29]=[CH:30][C:31]=1[C:32]([F:35])([F:34])[F:33])[CH:27]=O.[BH3-]C#N.[Na+]>CO.CC(O)=O>[CH2:1]([N:8]1[CH2:12][CH:11]([C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)[CH:10]([N:21]([CH2:27][C:26]2[CH:29]=[CH:30][C:31]([C:32]([F:33])([F:34])[F:35])=[C:24]([F:23])[CH:25]=2)[CH3:22])[CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 27375373-Fluoro-4-(trifluoromethyl)benzaldehydeHCID 5003444Sodium cyanoborohydrideHCID 67324150[(3RS,4SR)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-methyl-amine

Product 1

HCID 86641315[(3RS,4SR)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amine

Reagents, catalysts & solvents 2

HCID 176
Acetic Acid
Solvent
HCID 887MethanolSolvent2×

Procedure

To a stirred solution of [(3RS,4SR)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-methyl-amine (3.5 g, 0.010 mol) in MeOH (60 ml) was added 3-fluoro-4-trifluoromethyl-benzaldehyde (2.10 g, 0.0109 mol). Then a solution of NaBH3CN (0.79 g, 0.012 mol) in MeOH (15 ml) and AcOH (0.1 ml) were added. The reaction mixture was stirred overnight at RT, concentrated under vacuo, diluted with EtOAc, washed with H2O. The organic phases were dried over Na2SO4 and the product purified by flash chromatography (SiO2, EtOAc/Heptane 1:4) to afford 3.31 g (6 2%) of the title compound as a colorless oil.

Workup

  1. concentrationconcentrated under vacuo
  2. additiondiluted with EtOAc
  3. washwashed with H2O
  4. dry with materialThe organic phases were dried over Na2SO4
  5. customthe product purified by flash chromatography (SiO2, EtOAc/Heptane 1:4)

Sources & evidence

ORD record
ord-66257e57b845477fa16d8704b721217b
Source dataset
uspto-grants-2012_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08293770B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes