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Ammonium Chloride → 1-c-[5-(Azulen-2-ylmethyl)-2-(benzyloxy)phenyl]-2,3,4,6-tetra-o-benzyl-d-glucopyranose

HRID 1375989
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Reaktionsgleichung

Reaktionsgleichung von HRID 1375989
C([Li])CCC.[CH2:6]([O:13][C:14]1[CH:30]=[CH:29][C:17]([CH2:18][C:19]2[CH:28]=[C:27]3[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=[CH:26]3)[CH:20]=2)=[CH:16][C:15]=1Br)[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.[CH2:32]([O:39][C@@H:40]1[C@@H:46]([O:47][CH2:48][C:49]2[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=2)[C@H:45]([O:55][CH2:56][C:57]2[CH:62]=[CH:61][CH:60]=[CH:59][CH:58]=2)[C@@H:44]([CH2:63][O:64][CH2:65][C:66]2[CH:71]=[CH:70][CH:69]=[CH:68][CH:67]=2)[O:43][C:41]1=[O:42])[C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1.[Cl-].[NH4+]>C1COCC1.CCCCCC>[CH:20]1[C:21]2[C:27]([CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:28][C:19]=1[CH2:18][C:17]1[CH:29]=[CH:30][C:14]([O:13][CH2:6][C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=2)=[C:15]([C:41]2([O:43][C@H:44]([CH2:63][O:64][CH2:65][C:66]3[CH:67]=[CH:68][CH:69]=[CH:70][CH:71]=3)[C@@H:45]([O:55][CH2:56][C:57]3[CH:58]=[CH:59][CH:60]=[CH:61][CH:62]=3)[C@H:46]([O:47][CH2:48][C:49]3[CH:54]=[CH:53][CH:52]=[CH:51][CH:50]=3)[C@H:40]2[O:39][CH2:32][C:33]2[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=2)[OH:42])[CH:16]=1
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Komponenten

7

Edukt 4

HCID 25517Ammonium ChlorideHCID 10907626(3R,4S,5R,6R)-3,4,5-Tris(benzyloxy)-6-((benzyloxy)methyl)oxan-2-oneHCID 587861482-[4-(Benzyloxy)-3-bromobenzyl]azuleneHCID 178418339Butyllithium

Produkt 1

HCID 116865651-c-[5-(Azulen-2-ylmethyl)-2-(benzyloxy)phenyl]-2,3,4,6-tetra-o-benzyl-d-glucopyranose
Ausbeute 468,1 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittel2×HCID 8058HexaneLösungsmittel

Versuchsvorschrift

A 1.6 M n-hexane solution of n-butyl lithium (0.32 ml) was added dropwise to a solution of 2-[4-(benzyloxy)-3-bromobenzyl]azulene (0.17 g) in THF (3.0 ml) at −55° C. and the mixture was stirred at the same temperature for 10 minutes. A solution of 2,3,4,6-tetra-O-benzyl-glucono-1,5-lactone (0.12 g) in THF (3.0 ml) was added dropwise to the reaction mixture and the mixture was stirred at the same temperature for 30 minutes. Saturated aqueous solution of ammonium chloride was added to the reaction mixture and the mixture was extracted with ethyl acetate. The organic layer was washed with brine and dried over anhydrous sodium sulfate. After filtration, the solvent was evaporated under reduced pressure. The resulting residue was purified by silica gel column chromatography (ethyl acetate-n-hexane) to obtain 1-C-[5-(azulen-2-ylmethyl)-2-(benzyloxy)phenyl]-2,3,4,6-tetra-O-benzyl-D-glucopyranose (0.9 g).

Aufarbeitung

  1. stirringthe mixture was stirred at the same temperature for 30 minutes
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationAfter filtration
  6. customthe solvent was evaporated under reduced pressure
  7. customThe resulting residue was purified by silica gel column chromatography (ethyl acetate-n-hexane)

Quellen und Nachweise

ORD-Eintrag
ord-3fc33bf6fb1444a3b4d2d1f959f2521d
Quelldatensatz
uspto-grants-2007_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07169761B2

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