Methyl morpholine oxide → 2-Benzyl-2-azabicyclo[2.2.2]octan-6-one

HRID 1837623Notes

Reaction equation

HRID 1837623 reaction equation
[CH2:1]([N:8]1[CH2:13][CH:12]2[CH2:14][CH2:15][CH:9]1[C@@H:10]([OH:16])[CH2:11]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C[N+]1([O-])CCOCC1>C(#N)C.[Ru]([O-])(=O)(=O)=O.C([N+](CCC)(CCC)CCC)CC>[CH2:1]([N:8]1[CH2:13][CH:12]2[CH2:14][CH2:15][CH:9]1[C:10](=[O:16])[CH2:11]2)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 2

HCID 82029Methyl morpholine oxideHCID 2802928(6S)-2-Benzyl-2-azabicyclo[2.2.2]octan-6-OL

Product 1

HCID 123174732-Benzyl-2-azabicyclo[2.2.2]octan-6-oneYield 81%

Reagents, catalysts & solvents 2

HCID 178419074HCID 178419074, compoundCatalystHCID 6342AcetonitrileSolvent

Procedure

To a vigorously stirring suspension of (6S)-N-benzyl-2-azabicyclo[2.2.2]octan-6-ol (1.5 g, 6.9 mmol, Maybridge) and activated 4 Å MS (1.0 g) in acetonitrile (70 mL) at 23° C. was sequentially added 4-methylmorpholine-N-oxide (1.2 g, 10 mmol) and tetrapropylammonium perruthenate (240 mg, 0.69 mmol). After stirring the resulting black suspension for 30 min, the mixture was concentrated in vacuo, and the resulting residue was purified by flash chromatography (20-50% ethyl acetate in hexanes) to provide N-benzyl-2-azabicyclo[2.2.2]octan-6-one as an orange oil (1.2 g, 81%). MS (AP CI) 216 (M+H).

Workup

  1. stirringAfter stirring the resulting black suspension for 30 min
  2. concentrationthe mixture was concentrated in vacuo
  3. customthe resulting residue was purified by flash chromatography (20-50% ethyl acetate in hexanes)

Sources & evidence

ORD record
ord-70398aa54c2340e3a01d4cbb3149fee6
Source dataset
uspto-grants-2004_08
Patent number
US06784200B2

Reaction notes

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