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Imidazole → (3aR,4S,5R,6aS)-4-({[tert-Butyl(dimethyl)silyl]oxy}methyl)-5-[(oxan-2-yl)oxy]hexahydro-2H-cyclopenta[b]furan-2-one

HRID 1051278
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1051278
CN(C)C=O.[OH:6][CH2:7][C@@H:8]1[C@@H:15]2[C@@H:11]([O:12][C:13](=[O:16])[CH2:14]2)[CH2:10][C@H:9]1[O:17][CH:18]1[CH2:23][CH2:22][CH2:21][CH2:20][O:19]1.N1C=CN=C1.[C:29]([Si:33]([CH3:36])([CH3:35])Cl)([CH3:32])([CH3:31])[CH3:30]>C(O)C>[CH3:35][Si:33]([CH3:36])([C:29]([CH3:32])([CH3:31])[CH3:30])[O:6][CH2:7][C@@H:8]1[C@@H:15]2[C@@H:11]([O:12][C:13](=[O:16])[CH2:14]2)[CH2:10][C@H:9]1[O:17][CH:18]1[CH2:23][CH2:22][CH2:21][CH2:20][O:19]1
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Komponenten

6

Edukt 4

HCID 795ImidazoleHCID 6228Dimethylformamide2×HCID 28928tert-Butyldimethylsilyl chlorideHCID 12770849(3aR,4S,5R,6aS)-4-(Hydroxymethyl)-5-[(oxan-2-yl)oxy]hexahydro-2H-cyclopenta[b]furan-2-one

Produkt 1

HCID 13080724(3aR,4S,5R,6aS)-4-({[tert-Butyl(dimethyl)silyl]oxy}methyl)-5-[(oxan-2-yl)oxy]hexahydro-2H-cyclopenta[b]furan-2-one
Ausbeute 105,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

To a dimethylformamide (hereinafter, abbreviated as DMF in some cases) (100 mL) solution of (3aR,4S,5R,6aS)-4-(hydroxymethyl)-5-(tetrahydro-2H-pyran-2-yloxy)hexahydro-2H-cyclopenta[b]furan-2-one (50 g) were sequentially added imidazole (29.22 g), and tert-butyldimethylchlorosilane (30.87 g) under ice-cooling, and the mixture was stirred at room temperature for 3.5 hours. After completion of the reaction, a small amount of ethanol was added, the reaction solution was poured into ice water, and this was extracted with ethyl acetate:hexane (2:3). The extract was washed with 1N hydrochloric acid, an aqueous saturated sodium bicarbonate solution, water and a saturated saline, dried with sodium sulfate, and concentrated under reduced pressure to obtain a titled compound (76.2 g) having the following physical property values.

Aufarbeitung

  1. temperaturecooling
  2. customAfter completion of the reaction
  3. extractionthis was extracted with ethyl acetate:hexane (2:3)
  4. washThe extract was washed with 1N hydrochloric acid
  5. dry with materialan aqueous saturated sodium bicarbonate solution, water and a saturated saline, dried with sodium sulfate
  6. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-d3006cb8e42c4e6580415fccbde04099
Quelldatensatz
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09388157B2

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