Triphenylphosphine → HCID 86614207, compound

HRID 888081Notes

Reaction equation

HRID 888081 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([OH:17])([C:13]([F:16])([F:15])[F:14])[C:9]([F:12])([F:11])[F:10])=[CH:4][CH:3]=1.[C:18]([O:22][C:23]([N:25]1[CH2:29][CH2:28][CH2:27][C@H:26]1[CH2:30]O)=[O:24])([CH3:21])([CH3:20])[CH3:19].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.CCOC(/N=N/C(OCC)=O)=O>C1COCC1>[C:18]([O:22][C:23]([N:25]1[CH2:29][CH2:28][CH2:27][C@H:26]1[CH2:30][O:17][C:8]([C:5]1[CH:4]=[CH:3][C:2]([NH2:1])=[CH:7][CH:6]=1)([C:9]([F:10])([F:11])[F:12])[C:13]([F:14])([F:15])[F:16])=[O:24])([CH3:21])([CH3:19])[CH3:20]

Participants

6

Reactant 4

HCID 11776TriphenylphosphineHCID 5778012-(4-Aminophenyl)-1,1,1,3,3,3-hexafluoropropan-2-olHCID 643448(S)-(-)-N-Boc-prolinolHCID 5462977Diethyl azodicarboxylate

Product 1

HCID 86614207HCID 86614207, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a mixture of 2-(4-amino-phenyl)-1,1,1,3,3,3-hexafluoro-propan-2-ol (1.30 g), (S)-2-hydroxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester (1.00 g), PPh3 (1.56 g) and molecular sieves 4 Å in THF (100 mL) was added DEAD (0.93 mL) slowly. The reaction was stirred at RT for 5 h and at reflux for overnight. After filtration to remove solids, the filtrate was concentrated and the residue was taken into ether. The organic phase was washed with saturated NaHCO3 and brine. The organic layer was dried over MgSO4 and evaporated to give a crude material as a very viscous brown oil which was purified by chromatography through silica gel (400 g, 2:1:7 to 3:1:6 EtOAc/Et3N/hexanes) to afford (S)-2-[1-(4-amino-phenyl)-2,2,2-trifluoro-1-trifluoromethyl-ethoxymethyl]-pyrrolidine-1-carboxylic acid tert-butyl ester as a light brown oil.

Workup

  1. temperatureat reflux for overnight
  2. filtrationAfter filtration
  3. customto remove solids
  4. concentrationthe filtrate was concentrated
  5. washThe organic phase was washed with saturated NaHCO3 and brine
  6. dry with materialThe organic layer was dried over MgSO4
  7. customevaporated
  8. customto give a crude material as a very viscous brown oil which
  9. customwas purified by chromatography through silica gel (400 g, 2:1:7 to 3:1:6 EtOAc/Et3N/hexanes)

Sources & evidence

ORD record
ord-aa9cea44a5194d58a620eb269df88cfb
Source dataset
uspto-grants-2012_08
Patent number
US08247556B2

Reaction notes

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