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

HRID 1941619
ノート
印刷プレビュー

反応式

HRID 1941619 の反応式
[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]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

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

生成物 1

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

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide
溶媒

反応条件

温度
60 °C

実験手順

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.

後処理

  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)

出典と根拠

ORDレコード
ord-1d2267eb502643df9e0d5e63881334e5
出典データセット
uspto-grants-1997_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US05703243

反応ノート

読み込み中…

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