4-Methylmorpholine → 1-(Diphenylmethyl)azetidin-3-one

HRID 605701

반응식

HRID 605701 반응식
Cl.[C:2]1([CH:8]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[N:9]2[CH2:12][CH:11]([OH:13])[CH2:10]2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CN1CCOCC1.C[N+]1([O-])CCOCC1.C(OCC)(=O)C>ClCCl.[Ru]([O-])(=O)(=O)=O.C([N+](CCC)(CCC)CCC)CC>[C:14]1([CH:8]([C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[N:9]2[CH2:12][C:11](=[O:13])[CH2:10]2)[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1

참가 물질

7

반응물 4

HCID 79724-MethylmorpholineHCID 8857Ethyl AcetateHCID 82029Methyl morpholine oxideHCID 28017261-benzhydrylazetidin-3-ol Hydrochloride

생성물 1

HCID 37355581-(Diphenylmethyl)azetidin-3-one수율 37%

시약·촉매·용매 2

HCID 178419074HCID 178419074, 화합물촉매HCID 6344Dichloromethane용매

실험 절차

1-(Diphenylmethyl)azetidin-3-ol hydrochloride (2.75 g, 9.98 mmol), prepared using procedures similar to those described for Scheme 1 of the General Synthetic Section, 3 Å molecular sieves and 4-methylmorpholine (1.1 mL, 10.0 mmol) were suspended in dichloromethane (20 mL) at 0° C. 4-Methylmorpholine N-oxide (2.93 g, 25.0 mmol) and tetrapropylammonium perruthenate (140 mg, 0.399 mmol) were added and the mixture was stirred at ambient for 24 h. The mixture was filtered through a plug of silica using 5% triethylamine in ethyl acetate as eluent. The filtrate was concentrated in vacuo and the residue was partitioned between ethyl acetate and saturated sodium bicarbonate solution. The organic portion was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo. Column chromatography (silica gel, 8:1 hexanes:ethyl acetate) gave 1-(diphenylmethyl)azetidin-3-one (871 mg, 3.68 mmol, 37% yield): 1H NMR (400 MHz, CDCl3): 7.50-7.46 (m, 4H), 7.33-7.27 (m, 4H), 7.27-7.19 (m, 2H), 4.59 (s, 1H), 4.01 (s, 4H); MS (EI) for C16H15NO: 238 (MH+).

후처리

  1. filtrationThe mixture was filtered through a plug of silica using 5% triethylamine in ethyl acetate as eluent
  2. concentrationThe filtrate was concentrated in vacuo
  3. customthe residue was partitioned between ethyl acetate and saturated sodium bicarbonate solution
  4. washThe organic portion was washed with brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-38235d1b3823428da89e2cee2812fd2e
출처 데이터셋
uspto-grants-2011_03
특허 번호
US07915250B2

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