Sodium borohydride → 7-[2-(3-Hydroxy-octyl)-6-oxo-piperidin-1-yl]-heptanoic acid methyl ester

HRID 2052900Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2052900
[BH4-].[Na+].[CH3:3][O:4][C:5](=[O:28])[CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]1[CH:17]([CH2:18][CH2:19][C:20](=[O:26])[CH2:21][CH2:22][CH2:23][CH2:24][CH3:25])[CH2:16][CH2:15][CH2:14][C:13]1=[O:27]>CO.C(Cl)Cl>[CH3:3][O:4][C:5](=[O:28])[CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]1[C:13](=[O:27])[CH2:14][CH2:15][CH2:16][CH:17]1[CH2:18][CH2:19][CH:20]([OH:26])[CH2:21][CH2:22][CH2:23][CH2:24][CH3:25]

Komponenten

5

Edukt 2

HCID 4311764Sodium borohydrideHCID 100218997-[2-Oxo-6-(3-oxooctyl)-piperidin-1-yl]-heptanoic acid methyl ester

Produkt 1

HCID 100446137-[2-(3-Hydroxy-octyl)-6-oxo-piperidin-1-yl]-heptanoic acid methyl esterAusbeute 61 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolKatalysatorHCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

Sodium borohydride (24 mg, 0.63 mmol), followed by MeOH (2 drops), was added to a solution of 7-[2-oxo-6-(3-oxo-octyl)-piperidin-1-yl]-heptanoic acid methyl ester (23 mg, 0.063 mmol) in CH2Cl2 (1.0 mL) at 0° C. The mixture was allowed to warm to rt. After 4 h at rt, the reaction was quenched with HCl (11.0M aqueous) and extracted with EtOAc (3×10 mL). The combined organic phase was washed with saturated aqueous NaHCO3 (15 mL) and brine (15 mL) then dried (Na2SO4), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (CH2Cl2→3% MeOH/CH2Cl2, gradient) afforded 14 mg (61%) of the title compound.

Aufarbeitung

  1. customthe reaction was quenched with HCl (11.0M aqueous)
  2. extractionextracted with EtOAc (3×10 mL)
  3. washThe combined organic phase was washed with saturated aqueous NaHCO3 (15 mL) and brine (15 mL)
  4. dry with materialthen dried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customPurification of the residue by flash column chromatography on silica gel (CH2Cl2→3% MeOH/CH2Cl2, gradient)

Quellen und Nachweise

ORD-Eintrag
ord-67fe7773134c41debb65002de76f75bb
Quelldatensatz
uspto-grants-2008_02
Patentnummer
US07326716B2

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