Hydrochloric Acid → 2-[4-Chloro-2-(hydroxymethyl)phenoxy]-1-{(2R,5S)-4-[(4-fluorophenyl)methyl]-2,5-dimethylpiperazin-1-yl}ethan-1-one

HRID 11642

Reaktionsgleichung

Reaktionsgleichung von HRID 11642
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:10][CH2:11][C:12]([N:14]2[CH2:19][C@H:18]([CH3:20])[N:17]([CH2:21][C:22]3[CH:27]=[CH:26][C:25]([F:28])=[CH:24][CH:23]=3)[CH2:16][C@H:15]2[CH3:29])=[O:13])=[C:6]([CH:9]=1)[CH:7]=[O:8].[BH4-].[Na+].Cl.[OH-].[Na+]>CO>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:10][CH2:11][C:12]([N:14]2[CH2:19][C@H:18]([CH3:20])[N:17]([CH2:21][C:22]3[CH:27]=[CH:26][C:25]([F:28])=[CH:24][CH:23]=3)[CH2:16][C@H:15]2[CH3:29])=[O:13])=[C:6]([CH2:7][OH:8])[CH:9]=1

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 4311764Sodium borohydrideHCID 53673807(2R,5S)-5-Chloro-2-{2-[4-(4-fluoro-benzyl)-2,5-dimethyl-piperazin-1-yl]-2-oxo-ethoxy}-benzaldehyde

Produkt 1

HCID 545634622-[4-Chloro-2-(hydroxymethyl)phenoxy]-1-{(2R,5S)-4-[(4-fluorophenyl)methyl]-2,5-dimethylpiperazin-1-yl}ethan-1-oneAusbeute 98,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

To a solution of 5-chloro-2-{2-[4-(4-fluoro-benzyl)-(2R,5S)-2,5-dimethyl-piperazin-1-yl]-2-oxo-ethoxy}-benzaldehyde (0.99 g, 2.36 mmol) in dry methanol (25 mL) was added sodium borohydride (0.19 g, 4.92 mmol). After 1 hour the reaction was acidified to pH 2 by the addition of 1N hydrochloric acid. After 5 minutes the reaction was neutralized with 1N sodium hydroxide and the methanol removed by evaporation. The resulting aqueous suspension was extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, filtered and evaporated to give the title compound (0.98 g).

Aufarbeitung

  1. customthe methanol removed by evaporation
  2. extractionThe resulting aqueous suspension was extracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-a56750f9d5d440e2bf22ef0d9a46e092
Quelldatensatz
uspto-grants-2006_08
Patentnummer
US07098212B2

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