Potassium Carbonate → HCID 58786151, Verbindung

HRID 1375968Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1375968
C([SiH](CC)CC)C.[CH2:8]([O:15][C@@H:16]1[C@@H:22]([O:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C@H:21]([O:31][CH2:32][C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[C@@H:20]([CH2:39][O:40][CH2:41][C:42]2[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=2)[O:19][C:17]1([C:48]1[CH:53]=[C:52]([CH3:54])[CH:51]=[CH:50][C:49]=1[O:55][CH2:56][CH3:57])O)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1.C(=O)([O-])[O-].[K+].[K+]>>[CH2:8]([O:15][C@@H:16]1[C@@H:22]([O:23][CH2:24][C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)[C@H:21]([O:31][CH2:32][C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[C@@H:20]([CH2:39][O:40][CH2:41][C:42]2[CH:43]=[CH:44][CH:45]=[CH:46][CH:47]=2)[O:19][C@H:17]1[C:48]1[CH:53]=[C:52]([CH3:54])[CH:51]=[CH:50][C:49]=1[O:55][CH2:56][CH3:57])[C:9]1[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=1

Komponenten

4

Edukt 3

HCID 11430Potassium CarbonateHCID 12052TriethylsilaneHCID 58786166HCID 58786166, Verbindung

Produkt 1

HCID 58786151HCID 58786151, VerbindungAusbeute 99,5 %

Versuchsvorschrift

Boron trifluoride-diethyl ether complex (0.6 ml) and triethylsilane (1.7 ml) were added dropwise to a solution of 2,3,4,6-tetra-O-benzyl-1-C-(2-ethoxy-5-methylphenyl)-D-glucopyranose (3.5 g) at −50° C. and the mixture was stirred for two hours. Saturated aqueous solution of potassium carbonate was added to the reaction mixture and the mixture was extracted with chloroform. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated. The residue was purified by silica gel column chromatography (hexane-ethyl acetate) to obtain (1S)-1,5-anhydro-2,3,4,6-tetra-O-benzyl-1-(2-ethoxy-5-methylphenyl)-D-glucitol (3.4 g).

Aufarbeitung

  1. extractionthe mixture was extracted with chloroform
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationAfter filtration
  5. concentrationthe filtrate was concentrated
  6. customThe residue was purified by silica gel column chromatography (hexane-ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-1a44c6cd78834a85976a814b42185d94
Quelldatensatz
uspto-grants-2007_01
Patentnummer
US07169761B2

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