4-Methylmorpholine → 1-(t-Butyldimethylsilyloxy)-3-(p-nitrophenoxycarbonyloxy)propane

HRID 356784

Reaktionsgleichung

Reaktionsgleichung von HRID 356784
[N+:1]([C:4]1[CH:13]=[CH:12][C:7]([O:8][C:9](Cl)=[O:10])=[CH:6][CH:5]=1)([O-:3])=[O:2].[Si:14]([O:21][CH2:22][CH2:23][CH2:24][OH:25])([C:17]([CH3:20])([CH3:19])[CH3:18])([CH3:16])[CH3:15].CN1CCOCC1>C(Cl)Cl>[Si:14]([O:21][CH2:22][CH2:23][CH2:24][O:25][C:9]([O:8][C:7]1[CH:6]=[CH:5][C:4]([N+:1]([O-:3])=[O:2])=[CH:13][CH:12]=1)=[O:10])([C:17]([CH3:19])([CH3:20])[CH3:18])([CH3:16])[CH3:15]

Komponenten

5

Edukt 3

HCID 79724-MethylmorpholineHCID 821294-Nitrophenyl chloroformateHCID 40777913-[(Tert-butyldimethylsilyl)oxy]propan-1-ol

Produkt 1

HCID 189396651-(t-Butyldimethylsilyloxy)-3-(p-nitrophenoxycarbonyloxy)propane

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel3×

Versuchsvorschrift

A 0.604 g (3.00 mmol) sample of p-nitrophenoxycarbonylchloride in 3 mL of methylene chloride was added to a solution of 0.570 g (3.00 mmol) of 3-(t-butyldimethylsilyloxy)-l-propanol and 0.329 mL of 4-methylmorpholine in 2 mL of methylene chloride cooled in an ice bath. The solution was stirred for 2 hours. The mixture was diluted with methylene chloride, which was washed with water, dried and concentrated. The crude product was chromatographed on silica gel, eluting with 10% ethyl acetate in hexane. The solvent was removed and the product dried to afford 0.831 g of the title compound, which was taken directly to the next step.

Aufarbeitung

  1. temperaturecooled in an ice bath
  2. washwas washed with water
  3. customdried
  4. concentrationconcentrated
  5. customThe crude product was chromatographed on silica gel
  6. washeluting with 10% ethyl acetate in hexane
  7. customThe solvent was removed
  8. customthe product dried

Quellen und Nachweise

ORD-Eintrag
ord-8da3edf749144590a330f676598eba7b
Quelldatensatz
uspto-grants-1998_11
Patentnummer
US05837873

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