Triacetoxyperiodinane → (4R,6S)-4-(tert-butyldimethylsilyloxy)-6-(dihydroxymethyl)-tetrahydropyran-2-one

HRID 1928679Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1928679
[Si:1]([O:8][C@@H:9]1[CH2:14][C@@H:13]([CH2:15][OH:16])[O:12][C:11](=[O:17])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=[O:20]>C(Cl)Cl>[Si:1]([O:8][C@@H:9]1[CH2:14][C@@H:13]([CH:15]([OH:20])[OH:16])[O:12][C:11](=[O:17])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

Komponenten

4

Edukt 2

HCID 159087TriacetoxyperiodinaneHCID 10659025(4R,6S)-4-(tert-butyldimethylsilyloxy)-6-(hydroxymethyl)-tetrahydropyran-2-one

Produkt 1

HCID 44128178(4R,6S)-4-(tert-butyldimethylsilyloxy)-6-(dihydroxymethyl)-tetrahydropyran-2-oneAusbeute 87 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

A mixture of (4R,6S)-4-(tert-butyldimethylsilyloxy)-6-(hydroxymethyl)-tetrahydropyran-2-one (150 mg, 0.58 mmol) and Dess-Martin periodinane (380 mg, 0.86 mmol) in CH2Cl2 (15 mL) is stirred at ambient temperature for 3 hours. The mixture is diluted with tBuMeO (20 mL), washed with saturated Na2S2O3 solution, saturated NaHCO3 solution, dried (MgSO4) and concentrated to give 139 mg (87%) of (4R,6S)-4-(tert-butyldimethylsilyloxy)-6-(dihydroxy methyl)tetrahydro-2H-pyran-2-one as white powder which is used in the next step without further purification.

Aufarbeitung

  1. additionThe mixture is diluted with tBuMeO (20 mL)
  2. washwashed with saturated Na2S2O3 solution, saturated NaHCO3 solution
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-737980fd8d834f6783214457a05b9877
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08183397B2

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