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Water → Methyl 1-Acetyl-4-(4-hydroxybenzenesulfonyl)-2,3,4,5-tetrahydro-1H-[1,4]benzodiazepine-3-carboxylate

HRID 1180560
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1180560
[C:1]([N:4]1[C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=2[CH2:8][N:7]([S:15]([C:18]2[CH:23]=[CH:22][C:21]([O:24]C)=[CH:20][CH:19]=2)(=[O:17])=[O:16])[CH:6]([C:26]([O:28][CH3:29])=[O:27])[CH2:5]1)(=[O:3])[CH3:2].B(Br)(Br)Br.O>C(Cl)Cl>[C:1]([N:4]1[C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][C:9]=2[CH2:8][N:7]([S:15]([C:18]2[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=2)(=[O:17])=[O:16])[CH:6]([C:26]([O:28][CH3:29])=[O:27])[CH2:5]1)(=[O:3])[CH3:2]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 962WaterHCID 25134Boron tribromideHCID 18612735HCID 18612735, Verbindung

Produkt 1

HCID 18612782Methyl 1-Acetyl-4-(4-hydroxybenzenesulfonyl)-2,3,4,5-tetrahydro-1H-[1,4]benzodiazepine-3-carboxylateAusbeute 33,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a 0° C. solution of methyl 1-acetyl-4-(4-methoxybenzenesulfonyl)-2,3,4,5-tetrahydro-1H-[1,4]benzodiazepine-3-carboxylate (9.8 g, 23.42 mmol) in methylene chloride (50 ml) was added, dropwise, a 1.0 molar solution of boron tribromide (51.52 ml, 51.52 mmol) in methylene chloride and the mixture was stirred overnight at room temperature. Ice and water were added to the reaction mixture and the insolubles filtered off. The filtrate was diluted with methylene chloride and water. The organic layer was separated, washed with saturated sodium chloride and dried over anhydrous sodium sulfate. The solvent was removed in vacuo to give a crude product, which was purified by chromatography on silica gel (hexane:ethyl acetate (I:1)) to give 3.2 g of product as a white foam.

Aufarbeitung

  1. filtrationthe insolubles filtered off
  2. additionThe filtrate was diluted with methylene chloride and water
  3. customThe organic layer was separated
  4. washwashed with saturated sodium chloride
  5. dry with materialdried over anhydrous sodium sulfate
  6. customThe solvent was removed in vacuo
  7. customto give a crude product, which
  8. customwas purified by chromatography on silica gel (hexane:ethyl acetate (I:1))

Quellen und Nachweise

ORD-Eintrag
ord-fc38c17b31f94de080cc30040653c89a
Quelldatensatz
uspto-grants-2007_10
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07282496B2

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