Aluminium lithium hydride → (RS)-1-[(3RS,4SR)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanol

HRID 906867노트

반응식

HRID 906867 반응식
[CH2:1]([N:8]1[CH2:12][CH:11]([C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)[CH:10]([C:21](=[O:23])[CH3:22])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[H-].[H-].[H-].[Li+].[Al+3]>C1COCC1>[CH2:1]([N:8]1[CH2:12][CH:11]([C:13]2[CH:18]=[CH:17][C:16]([Cl:19])=[C:15]([Cl:20])[CH:14]=2)[CH:10]([CH:21]([OH:23])[CH3:22])[CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

4

반응물 2

HCID 21226445Aluminium lithium hydrideHCID 669997301-[(3RS,4SR)-1-Benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanone

생성물 1

HCID 66999712(RS)-1-[(3RS,4SR)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanol수율 31.1%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of 1-[(3SR,4RS)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanone (IX-1) (14.90 g, 0.043 mol) in THF (300 mL) at 0° C. were added portion wise LiAlH4 (2.05 g, 0.051 mol). Stirring was continued for one hour, and the reaction mixture was carefully quenched by addition of aq. NH4Cl, concentrated under vacuo and the product extracted with EtOAC. The combined organic phases were dried on Na2SO4 and concentrated under vacuo. The two diastereoisomeres were separated by column chromatography (SiO2, EtOAc/H, 1:1) to yield (SR)-1-[(3SR,4RS)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanol (X-B-1) 4.69 g (31%) as awhite solid ES-MS m/e: 350.2 (M+H+) and (RS)-1-[(3SR,4RS)-1-benzyl-4-(3,4-dichloro-phenyl)-pyrrolidin-3-yl]-ethanol (X-A-1) 5.30 g (35%) as awhite solid ES-MS m/e: 350.2 (M+H+).

후처리

  1. customthe reaction mixture was carefully quenched by addition of aq. NH4Cl
  2. concentrationconcentrated under vacuo
  3. extractionthe product extracted with EtOAC
  4. customThe combined organic phases were dried on Na2SO4
  5. concentrationconcentrated under vacuo
  6. customThe two diastereoisomeres were separated by column chromatography (SiO2, EtOAc/H, 1:1)

출처 및 근거

ORD 기록
ord-b0387127e3cc4e968d0d1ecff6cec55e
출처 데이터셋
uspto-grants-2011_09
특허 번호
US08012998B2

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