Ethanol → (S)-3-((R)-2-Ethoxy-1-hydroxyethyl)pyrrolidine-1-carboxylic Acid t-Butyl Ester

HRID 2390570

반응식

HRID 2390570 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([C@@H:13]2[CH2:15][O:14]2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[O-][CH2:17][CH3:18].[Na+].CC[OH:22]>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH2:11][C@H:10]([C@@H:13]([OH:22])[CH2:15][O:14][CH2:17][CH3:18])[CH2:9]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]

참가 물질

5

반응물 3

HCID 702EthanolHCID 2723922Sodium ethoxideHCID 86650334(S)-(R)-3-Oxiranylpyrrolidine-1-carboxylic acid t-butyl ester

생성물 1

HCID 66858889(S)-3-((R)-2-Ethoxy-1-hydroxyethyl)pyrrolidine-1-carboxylic Acid t-Butyl Ester

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

(S)—(R)-3-Oxiranylpyrrolidine-1-carboxylic acid t-butyl ester (440 mg, 2.1 mmol) was added to 2M of sodium ethoxide in EtOH (2.1 mL, 4.1 mmol; prepared from EtOH and NaH). The resulting solution was placed in a microwave reactor for 10 minutes at 100° C., then cooled to room temperature. DCM (5 mL) was added, followed by washing with saturated aqueous NaCl (5 mL). The organic layer was collected, dried over Na2SO4, filtered, and concentrated. The crude product was purified by column chromatography (0-100% ether/Hexanes) to give the title compound as a clear oil (400 mg).

후처리

  1. washby washing with saturated aqueous NaCl (5 mL)
  2. customThe organic layer was collected
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude product was purified by column chromatography (0-100% ether/Hexanes)

출처 및 근거

ORD 기록
ord-38406471dfb1477c8ba059f1fe35e950
출처 데이터셋
uspto-grants-2012_09
특허 번호
US08273786B2

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