Methyl morpholine oxide → (2S,3S)-N-tert-Butyloxycarbonyl-3-(tert-butyldimethylsilanyloxy)-2-(1-hydroxyethyl)pyrrolidine

HRID 132687Notes

Reaction equation

HRID 132687 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([O:13][Si:14]([C:17]([CH3:20])([CH3:19])[CH3:18])([CH3:16])[CH3:15])[C@H:9]1[CH:21]([OH:23])[CH3:22])=[O:7])([CH3:4])([CH3:3])[CH3:2].C[N+]1([O-])CCOCC1>CCCCCC.CCC[N+](CCC)(CCC)CCC.[O-][Ru](=O)(=O)=O>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([O:13][Si:14]([C:17]([CH3:20])([CH3:19])[CH3:18])([CH3:16])[CH3:15])[C@@H:9]1[CH:21]([OH:23])[CH3:22])=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

5

Reactant 2

HCID 82029Methyl morpholine oxideHCID 59734597(2R,3S)-N-tert-Butyloxycarbonyl-3-(tert-butyldimethylsilanyloxy)-2-(1-hydroxyethyl)pyrrolidine

Product 1

HCID 66863428(2S,3S)-N-tert-Butyloxycarbonyl-3-(tert-butyldimethylsilanyloxy)-2-(1-hydroxyethyl)pyrrolidine

Reagents, catalysts & solvents 2

HCID 178419074HCID 178419074, compoundCatalyst2×HCID 8058HexaneSolvent

Procedure

To compound 1K (0.1M solution in 10% CH3CN in DCM) add NMO (2 equiv) followed by TPAP (0.05 equiv). Provide sufficient ventilation and take care to watch for exotherm. Stir reaction at rt for 3-5 h. Dilute by half with hexane and allow TPAP to precipitate. Flash filter through silica gel plug (20 fold mass of starting alcohol) and elute with 10% EtOAc/Hex until product is not observed in eluent. Removal of solvents gave the title compound. MS (ES) m/z 344.31 [M+H]+.

Workup

  1. customProvide sufficient ventilation
  2. customreaction at rt for 3-5 h
  3. customto precipitate
  4. filtrationFlash filter through silica gel plug (20 fold mass of starting alcohol)
  5. washelute with 10% EtOAc/Hex until product
  6. customRemoval of solvents

Sources & evidence

ORD record
ord-db551544a27945e2a89082e299d48949
Source dataset
uspto-grants-2008_06
Patent number
US07388027B2

Reaction notes

Loading…