Phosphate → 5-(2,2-diMethyl-4H-benzo[d][1,3]dioxin-6-yl)-3-(6-(2-hydroxyethoxy)hexyl)oxazolidin-2-one

HRID 219003Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 219003
[CH3:1][C:2]1([CH3:18])[O:7][C:6]2[CH:8]=[CH:9][C:10]([C@H:12]3[O:16][C:15](=[O:17])[NH:14][CH2:13]3)=[CH:11][C:5]=2[CH2:4][O:3]1.[H-].[Na+].Br[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][O:28][CH2:29][CH2:30][OH:31].P([O-])([O-])([O-])=O>CN(C=O)C.O>[CH3:1][C:2]1([CH3:18])[O:7][C:6]2[CH:8]=[CH:9][C:10]([CH:12]3[O:16][C:15](=[O:17])[N:14]([CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][O:28][CH2:29][CH2:30][OH:31])[CH2:13]3)=[CH:11][C:5]=2[CH2:4][O:3]1

Komponenten

7

Edukt 4

HCID 1061PhosphateHCID 24758Sodium hydrideHCID 10933894(5R)-5-(2,2-Dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-oneHCID 862155092-[(6-Bromohexyl)oxy]ethanol

Produkt 1

HCID 752151765-(2,2-diMethyl-4H-benzo[d][1,3]dioxin-6-yl)-3-(6-(2-hydroxyethoxy)hexyl)oxazolidin-2-oneAusbeute 84,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel2×

Versuchsvorschrift

A solution of (5R)-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one (1.067 g) in DMF (10 ml) under nitrogen was treated with sodium hydride (60% dispersion in mineral oil, 222 mg) and the mixture was stirred at 20° for 15 min. A solution of 2-[(6-bromohexyl)oxy]ethanol (1.157 g) in DMF (1 ml) was added and the mixture was stirred at 20° for 3.5 h. Phosphate buffer solution (pH 6.5, 20 ml) and water (30 ml) were added. The mixture was extracted with EtOAc (2×20 ml) and the combined extracts were washed with water (30 ml) and dried (Na2SO4). Solvent evaporation in vacuo gave a residue which was purified by flash chromatography on silica gel. Elution with MeOH-EtOAc (1:9) gave the title compound (1.42 g). LCMS RT=2.90 min, ES+ve 394 (MH)+.

Aufarbeitung

  1. stirringthe mixture was stirred at 20° for 3.5 h
  2. extractionThe mixture was extracted with EtOAc (2×20 ml)
  3. washthe combined extracts were washed with water (30 ml)
  4. dry with materialdried (Na2SO4)
  5. customSolvent evaporation in vacuo
  6. customgave a residue which
  7. customwas purified by flash chromatography on silica gel
  8. washElution with MeOH-EtOAc (1:9)

Quellen und Nachweise

ORD-Eintrag
ord-22bce26f52ca41b0ae9a9ac28a66b349
Quelldatensatz
uspto-grants-2012_06
Patentnummer
US08198483B2

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