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HRID1744882

反应详情

EQUATION

反应方程式

HRID 1744882 的结构方程式

REACTANTS

反应物

4
结构：CC(=O)O
HCID176

Acetic Acid

C2H4O2

结构：[Li+].[OH-]
HCID3939

Lithium hydroxide anhydrous

HLiO

结构：CCOC(=O)C[C@H]1CCCc2c1n([C@@H](C)c1ccc(Cl)cc1)c1c(S(C)(=O)=O)cc(F)cc21
HCID66967751

未命名化合物

2 次

结构：CCOC(=O)C[C@@H]1CCCc2c1n([C@@H](C)c1ccc(Cl)cc1)c1c(S(C)(=O)=O)cc(F)cc21
HCID86615644

未命名化合物

PRODUCTS

生成物

1
结构：C[C@@H](c1ccc(Cl)cc1)n1c2c(c3cc(F)cc(S(C)(=O)=O)c31)CCC[C@@H]2CC(=O)O
HCID11259797

未命名化合物

AUXILIARIES

试剂、催化剂与溶剂

1
结构：C1CCOC1.CO
溶剂HCID21899815

未命名化合物

CONDITIONS

反应条件

温度
0 °C

PROCEDURE

实验过程

The diastereomeric mixture of ethyl[(1R)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate and ethyl[(1S)-9-[(1S)-1-(4-chlorophenyl)-ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate (1 eq) was dissolved in a 3.5/1 mixture of THF/MeOH (0.25M) and cooled at 0° C. Aqueous LiOH 1N (1 eq) was slowly added and the mixture was stirred at 0° C. for 12 h or until almost complete hydrolysis of ethyl[(1R)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate, the other diastereomer was only slightly hydrolyzed under these conditions. AcOH was added and the solvent was removed by evaporation. The residue was taken up in EtOAc/H2O and the organic layer was washed with brine, dried over Na2SO4, filtered and concentrated. Ethyl[(1S)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate and [(1R)-9-[(1S)-1-(4-chloro-phenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetic acid were separated by flash chromatography eluting with 40% EtOAc in hexanes containing 1% AcOH to give the desired [(1R)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetic acid with de>90% which was swished in 30% EtOAc in hexane to give the desired compound as a white solid with de>95%.

WORKUP

后处理

  1. customthe solvent was removed by evaporation
  2. washthe organic layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customEthyl[(1S)-9-[(1S)-1-(4-chlorophenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetate and [(1R)-9-[(1S)-1-(4-chloro-phenyl)ethyl]-6-fluoro-8-(methylsulfonyl)-2,3,4,9-tetrahydro-1H-carbazol-1-yl]acetic acid were separated by flash chromatography
  7. washeluting with 40% EtOAc in hexanes containing 1% AcOH