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Ethyl Acetate → (2S,4R)-1-allyloxycarbonyl-2-phthalimidomethyl-4-methanesulfonyloxypyrrolidine

HRID 1941619
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HRID 1941619 반응식
[CH2:1]([O:4][C:5]([N:7]1[CH2:11][C@H:10]([O:12][S:13]([CH3:16])(=[O:15])=[O:14])[CH2:9][C@H:8]1[CH2:17]OS(C1C=CC(Cl)=CC=1)(=O)=O)=[O:6])[CH:2]=[CH2:3].[C:29]1(=[O:39])[NH:33][C:32](=[O:34])[C:31]2=[CH:35][CH:36]=[CH:37][CH:38]=[C:30]12.[K].C(OCC)(=O)C>CN(C)C=O>[CH2:1]([O:4][C:5]([N:7]1[CH2:11][C@H:10]([O:12][S:13]([CH3:16])(=[O:14])=[O:15])[CH2:9][C@H:8]1[CH2:17][N:33]1[C:32](=[O:34])[C:31]2=[CH:35][CH:36]=[CH:37][CH:38]=[C:30]2[C:29]1=[O:39])=[O:6])[CH:2]=[CH2:3]
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참가 물질

5

반응물 3

HCID 8857Ethyl AcetateHCID 22851791(2S,4R)-1-allyloxycarbonyl-2-p-chlorobenzenesulfonyloxy methyl-4-methanesulfonyloxypyrrolidineHCID 24194345Phthalimide potassium salt

생성물 1

HCID 57022733(2S,4R)-1-allyloxycarbonyl-2-phthalimidomethyl-4-methanesulfonyloxypyrrolidine수율 61%

시약·촉매·용매 1

HCID 6228
Dimethylformamide
용매

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온도
60 °C

실험 절차

To a solution of (2S,4R)-1-allyloxycarbonyl-2-p-chlorobenzenesulfonyloxymethyl-4-methanesulfonyloxypyrrolidine (23.7 g: ca. 50 mmole) in dimethylformamide (50 ml), potassium phthalimide (10.2 g: 55 mmole) is added in a nitrogen atmosphere, and the mixture is stirred at 60° C. for 3.5 hours. The reaction mixture is poured into a stirring mixture of ice water (500 ml) and ethyl acetate (500 ml). The organic layer is successively washed with water (4 times) and saturated brine, dried over magnesium sulfate, and concentrated in vacuo. The residue is recrystallized from a mixture of n-hexane and toluene. The solid is filtered off and the filtrate is purified by silica gel chromatography (toluene-ethyl acetate) to give crude (2S,4R)-1-allyloxycarbonyl-2-phthalimidomethyl-4-methanesulfonyloxypyrrolidine (12.41 g). Yield: 61%. Colorless oil.

후처리

  1. washThe organic layer is successively washed with water (4 times) and saturated brine
  2. dry with materialdried over magnesium sulfate
  3. concentrationconcentrated in vacuo
  4. customThe residue is recrystallized from a mixture of n-hexane and toluene
  5. filtrationThe solid is filtered off
  6. customthe filtrate is purified by silica gel chromatography (toluene-ethyl acetate)

출처 및 근거

ORD 기록
ord-1d2267eb502643df9e0d5e63881334e5
출처 데이터셋
uspto-grants-1997_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05703243

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