Water → 1-(Diphenylmethyl)azetidin-3-one

HRID 2367943Notes

Reaction equation

HRID 2367943 reaction equation
[CH:1]([N:14]1[CH2:17][CH:16]([OH:18])[CH2:15]1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.O.C(OCC)(=O)C>CS(C)=O>[CH:1]([N:14]1[CH2:17][C:16](=[O:18])[CH2:15]1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 962WaterHCID 8471TriethylamineHCID 8857Ethyl AcetateHCID 3304481-(Diphenylmethyl)azetidin-3-ol

Product 1

HCID 37355581-(Diphenylmethyl)azetidin-3-oneYield 79%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

That is, to a solution of 27.27 g of 1-benzhydrylazetan-3-ol dissolved in 225 ml of dimethylsulfoxide was added 135.5 ml of triethylamine, 59.80 g of sulfur trioxide-pyridine complex was added thereto under ice-cooling, and the mixture was stirred at room temperature for 2.5 hours. To the reaction mixture were added water and ethyl acetate, the mixture was stirred and the liquids were separated. The organic layer was washed with a saturated brine, dried and concentrated. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=15:1) to obtain 21.35 g of 1-benzhydrylazetidin-3-one.

Workup

  1. additionwas added
  2. temperatureunder ice-cooling
  3. stirringthe mixture was stirred
  4. customthe liquids were separated
  5. washThe organic layer was washed with a saturated brine
  6. customdried
  7. concentrationconcentrated
  8. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=15:1)

Sources & evidence

ORD record
ord-24d01b118a374de8b2e05990496ca476
Source dataset
uspto-grants-2014_04
Patent number
US08703721B2

Reaction notes

Loading…