Bromomethylcyclopropane → (5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-(cyclopropylmethoxy)butan-2-yl)piperidin-2-one

HRID 931954Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 931954
[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH2:22][OH:23])[C:11](=[O:26])[CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1.Br[CH2:28][CH:29]1[CH2:31][CH2:30]1.CC(C)([O-])C.[Na+]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:8]2[C@@H:13]([C:14]3[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][CH:15]=3)[N:12]([C@@H:21]([CH2:24][CH3:25])[CH2:22][O:23][CH2:28][CH:29]3[CH2:31][CH2:30]3)[C:11](=[O:26])[CH2:10][CH2:9]2)[CH:5]=[CH:6][CH:7]=1

Komponenten

5

Edukt 3

HCID 81503BromomethylcyclopropaneHCID 23676156Sodium t-butoxideHCID 58573362(5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-hydroxybutan-2-yl)piperidin-2-one

Produkt 1

HCID 58573287(5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-(cyclopropylmethoxy)butan-2-yl)piperidin-2-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a solution of 1.48 g (3.77 mmol) of (5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-hydroxybutan-2-yl)piperidin-2-one (Example 68, Step A) and bromomethylcyclopropane (0.828 mL, 7.54 mmol) in DMF (20 mL) was added sodium t-butoxide (0.544 g, 5.66 mmol) at 0° C. The mixture was stirred at 0° C. for 2 h and then warmed to rt. Then the reaction was stirred at rt for 14 h. The reaction was quenched with sat. aqueous NH4Cl solution and extracted with EtOAc. The combined organic layers were washed with water and sat. aq. NaCl solution, dried over MgSO4, filtered and the filtrate was concentrated under reduced pressure. Purification by flash chromatography on silica gel (eluent: 20%-40% EtOAc/Hexanes, gradient elution) provided the title compound as a colorless oil.

Aufarbeitung

  1. temperaturewarmed to rt
  2. stirringThen the reaction was stirred at rt for 14 h
  3. customThe reaction was quenched with sat. aqueous NH4Cl solution
  4. extractionextracted with EtOAc
  5. washThe combined organic layers were washed with water and sat. aq. NaCl solution
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationthe filtrate was concentrated under reduced pressure
  9. customPurification by flash chromatography on silica gel (eluent: 20%-40% EtOAc/Hexanes, gradient elution)

Quellen und Nachweise

ORD-Eintrag
ord-64bd22eb9c4545b08e92f2573456b6b0
Quelldatensatz
uspto-grants-2016_03
Patentnummer
US09296736B2

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