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Water → 4-[9-(t-Butyldimethylsilyloxy)-1-nonynyl]-7-methoxymethoxy-3-(4-methoxymethoxyphenyl)-3-methylchroman

HRID 1792306
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1792306
[Si:1]([O:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16]#[C:17][C:18]1(O)[C:27]2[C:22](=[CH:23][C:24]([O:28][CH2:29][O:30][CH3:31])=[CH:25][CH:26]=2)[O:21][CH2:20][C:19]1([C:33]1[CH:38]=[CH:37][C:36]([O:39][CH2:40][O:41][CH3:42])=[CH:35][CH:34]=1)[CH3:32])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].C([BH3-])#N.[Na+].O>ClCCCl.[I-].[Zn+2].[I-]>[Si:1]([O:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16]#[C:17][CH:18]1[C:27]2[C:22](=[CH:23][C:24]([O:28][CH2:29][O:30][CH3:31])=[CH:25][CH:26]=2)[O:21][CH2:20][C:19]1([C:33]1[CH:38]=[CH:37][C:36]([O:39][CH2:40][O:41][CH3:42])=[CH:35][CH:34]=1)[CH3:32])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:2])[CH3:3]
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Komponenten

6

Edukt 3

HCID 962WaterHCID 5003444Sodium cyanoborohydrideHCID 220330974-[9-(t-Butyldimethylsilyloxy)-1-nonynyl]4-hydroxy-7-methoxymethoxy-3-(4-methoxymethoxyphenyl)-3-methylchroman

Produkt 1

HCID 220331314-[9-(t-Butyldimethylsilyloxy)-1-nonynyl]-7-methoxymethoxy-3-(4-methoxymethoxyphenyl)-3-methylchromanAusbeute 50 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9883512
zinc(II)iodide
Katalysator
HCID 111,2-DichloroethaneLösungsmittel

Versuchsvorschrift

To a solution of 4-[9-(t-butyldimethylsilyloxy)-1-nonynyl]-4-hydroxy-7-methoxymethoxy-3-(4-methoxymethoxyphenyl)-3-methylchroman (3.10 g, 5.06 mmol) in 1,2-dichloroethane (200 ml) were added zinc iodide (2.42 g, 7.59 mmol) and sodium cyanoborohydride (2.23 g, 35.42 mmol), which was then stirred at room temperature for 8 hours. After the reaction was completed, water was added to the reaction mixture, and the resulting mixture was extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to flash chromatography on silica gel (n-hexane:ethyl acetate=9:1) to give the title compound (1.50 g, yield 50%, 3RS/4RS:3RS14SR=6:1) as a colorless oil.

Aufarbeitung

  1. extractionthe resulting mixture was extracted with ethyl acetate
  2. dry with materialThe extract was dried over anhydrous magnesium sulfate
  3. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-f9d1a179e0a541f8bfbcd308542cc988
Quelldatensatz
uspto-grants-2006_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07074819B2

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