Triphenylphosphine → 2-{(SR)-1-[(3RS,4SR)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethoxy}-5-trifluoromethyl-pyridine

HRID 906873Notes

Reaction equation

HRID 906873 reaction equation
C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[F:20][C:21]([F:30])([F:29])[C:22]1[CH:23]=[CH:24][C:25]([OH:28])=[N:26][CH:27]=1.C1C=CC(COC(/N=N/C(OCC2C=CC=CC=2)=O)=O)=CC=1.[CH2:53]([N:60]1[CH2:64][CH:63]([C:65]2[CH:70]=[CH:69][C:68]([Cl:71])=[C:67]([Cl:72])[CH:66]=2)[CH:62]([CH:73](O)[CH3:74])[CH2:61]1)[C:54]1[CH:59]=[CH:58][CH:57]=[CH:56][CH:55]=1>C1COCC1>[CH2:53]([N:60]1[CH2:64][CH:63]([C:65]2[CH:70]=[CH:69][C:68]([Cl:71])=[C:67]([Cl:72])[CH:66]=2)[CH:62]([CH:73]([O:28][C:25]2[CH:24]=[CH:23][C:22]([C:21]([F:20])([F:29])[F:30])=[CH:27][N:26]=2)[CH3:74])[CH2:61]1)[C:54]1[CH:55]=[CH:56][CH:57]=[CH:58][CH:59]=1

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 5387121Dibenzyl azodicarboxylateHCID 66999712(RS)-1-[(3RS,4SR)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanolHCID 178516044HCID 178516044, compound

Product 1

HCID 669991542-{(SR)-1-[(3RS,4SR)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethoxy}-5-trifluoromethyl-pyridineYield 78%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a suspension of PPh3 (PPh3 polymer bound, 3 mmol PPh3/g resin) (0.77 g) in THF (25 mL) at 0° C. were added 5-trifluoromethyl-pyridin-2-ol (0.28 g, 1.75 mmol) and then DBAD (0.43 g). After 5 minutes was added (RS)-1-[(3RS,4SR)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanol (0.41 g, 1.17 mmol, described herein above). The reaction mixture was stirred over night at RT, filtered on celite and concentrated under vacuo. Extraction with EtOAc/aq.NaOH 1M, followed by column chromatography (SiO2, EtOAc/H, 1:4) yielded 0.45 g (78%) of the title compound as a colorless oil. ES-MS m/e: 495.8 (M+H+).

Workup

  1. filtrationfiltered on celite
  2. concentrationconcentrated under vacuo
  3. extractionExtraction with EtOAc/aq

Sources & evidence

ORD record
ord-a3ff04cdbef041f28d930ccd806af5d4
Source dataset
uspto-grants-2011_09
Patent number
US08012998B2

Reaction notes

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