Sodium Hydroxide → t-butyl (1S)-2-(3-methylphenoxy)-1-{[(3-nitrobenzyl)oxy]methyl}ethylcarbamate

HRID 12416

Reaktionsgleichung

Reaktionsgleichung von HRID 12416
[OH:1][CH2:2][C@H:3]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])[CH2:4][O:5][C:6]1[CH:11]=[CH:10][CH:9]=[C:8]([CH3:12])[CH:7]=1.[N+:21]([C:24]1[CH:25]=[C:26]([CH:29]=[CH:30][CH:31]=1)[CH2:27]Br)([O-:23])=[O:22].S([O-])([O-])(=O)=O.C([N+](CCCC)(CCCC)CCCC)CCC.C([N+](CCCC)(CCCC)CCCC)CCC.[OH-].[Na+]>C(OCC)(=O)C.C1C=CC=CC=1>[CH3:12][C:8]1[CH:7]=[C:6]([CH:11]=[CH:10][CH:9]=1)[O:5][CH2:4][C@@H:3]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:17])([CH3:19])[CH3:18])[CH2:2][O:1][CH2:27][C:26]1[CH:29]=[CH:30][CH:31]=[C:24]([N+:21]([O-:23])=[O:22])[CH:25]=1

Komponenten

7

Edukt 4

HCID 14798Sodium HydroxideHCID 77568Benzene, 1-(bromomethyl)-3-nitro-HCID 11433187Bis(tetrabutylammonium) sulphateHCID 68697680t-butyl (1S)-2-hydroxy-1-[(3-methylphenoxy)methyl]ethylcarbamate

Produkt 1

HCID 86609359t-butyl (1S)-2-(3-methylphenoxy)-1-{[(3-nitrobenzyl)oxy]methyl}ethylcarbamateAusbeute 76,6 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 241BenzeneLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To t-butyl (1S)-2-hydroxy-1-[(3-methylphenoxy)methyl]ethylcarbamate (300 mg) obtained in Step 1 of Example 118 were added 3-nitrobenzyl bromide (254 mg), tetrabutylammonium sulfate (91 mg), benzene (2.3 ml) and 50% aqueous sodium hydroxide solution (2.3 ml), and the mixture was stirred at room temperature for 1.5 hrs. The mixture was diluted with ethyl acetate and, after washing with water, the organic layer was dried over anhydrous sodium sulfate. The solvent was evaporated and the obtained crude product was purified by silica gel chromatography (ethyl acetate-hexane) to give the title compound (340 mg).

Aufarbeitung

  1. washafter washing with water
  2. dry with materialthe organic layer was dried over anhydrous sodium sulfate
  3. customThe solvent was evaporated
  4. customthe obtained crude product
  5. customwas purified by silica gel chromatography (ethyl acetate-hexane)

Quellen und Nachweise

ORD-Eintrag
ord-f3dc3c9b14454ea5a9913cceb9841054
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07728005B2

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