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

HRID 910435Notes

Reaction equation

HRID 910435 reaction equation
[CH2:1]([N:8]1[CH2:12][CH:11]([C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([F: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]([F: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

Participants

6

Reactant 3

HCID 27375373-Fluoro-4-(trifluoromethyl)benzaldehydeHCID 5003444Sodium cyanoborohydrideHCID 67398566[(3RS,4SR)-1-Benzyl-4-(4-chloro-3-fluoro-phenyl)-pyrrolidin-3-yl]-methyl-amine

Product 1

HCID 86641316[(3RS,4SR)-1-Benzyl-4-(4-chloro-3-fluoro-phenyl)-pyrrolidin-3-yl]-(3-fluoro-4-trifluoromethyl-benzyl)-methyl-amineYield 28%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 887MethanolSolvent2×

Procedure

To a stirred solution of [(3RS,4SR)-1-benzyl-4-(4-chloro-3-fluoro-phenyl)-pyrrolidin-3-yl]-methyl-amine (340 mg, 1.06 mmol) in MeOH (6 ml) was added 3-fluoro-4-trifluoromethyl-benzaldehyde (230 mg, 1.20 mmol). Then a solution of NaBH3CN (85 mg, 1.3 mol) in MeOH (1.5 ml) and AcOH (0.01 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 145 mg (28%) 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-62557d528b8d4611a29754a80bda242f
Source dataset
uspto-grants-2011_09
Patent number
US08022099B2

Reaction notes

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