Methanol → HCID 9841354, Verbindung

HRID 1057648Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1057648
[CH2:1]([N:8]1[C:20]2[CH:19]=[CH:18][C:17]([Cl:21])=[C:16]([O:22][CH2:23][C:24]#[N:25])[C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CO>C1COCC1>[CH2:1]([N:8]1[C:20]2[CH:19]=[CH:18][C:17]([Cl:21])=[C:16]([O:22][CH2:23][CH2:24][NH2:25])[C:15]=2[C:14]2[C:9]1=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

4

Edukt 2

HCID 887MethanolHCID 18671666HCID 18671666, Verbindung

Produkt 1

HCID 9841354HCID 9841354, VerbindungAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

To [(9-benzyl-3-chloro-9H-carbazol-4-yl)oxy]acetonitrile (0.292 g, 0.842 mmol) in THF (6 mL) is added borane-methyl sulfide complex (0.24 mL, 2.53 mmol). The mixture is stirred at 80° C. for 2.5 h and then allowed to cool. MeOH is carefully added to the residue until gas evolution ceased and then the mixture is concentrated under vacuum. MeOH addition/removal is repeated two more times and then MeOH-dichloromethane (about 2 mL each) is added, followed by several drops of conc. HCl. The mixture is stirred for about 15 min and then taken to dryness under vacuum. After partitioning with dichloromethane and aq. sodium bicarbonate and drying, the residue is chromatographed on silica gel (50 mL) using MeOH-dichloromethane (2/98 to 4/96) to give 0.206 g (70%) of 2-[(9-benzyl-3-chloro-9H-carbazol-4-yl)oxy]ethylamine. The methanesulfonate salt is prepared by dissolving 2-[(9-benzyl-3-chloro-9H-carbazol-4-yl)oxy]ethylamine in MeOH and dichloromethane and adding methanesulfonic acid (0.0581 g). The mixture is concentrated to dryness under vacuum and the residue is crystallized from dichloromethane-hexane to give 0.206 g of 2-[(9-benzyl-3-chloro-9H-carbazol-4-yl)oxy]ethylamine, methanesulfonate salt as a white crystalline solid. 1H NMR (CDCl3) δ1.9, 3.29, 4.31, 5.49, 7.07, 7.12, 7.27, 7.35-7.49, 8.32.

Aufarbeitung

  1. temperatureto cool
  2. concentrationthe mixture is concentrated under vacuum
  3. customMeOH addition/removal
  4. additionMeOH-dichloromethane (about 2 mL each) is added
  5. stirringThe mixture is stirred for about 15 min
  6. customAfter partitioning with dichloromethane and aq. sodium bicarbonate
  7. customdrying
  8. customthe residue is chromatographed on silica gel (50 mL)

Quellen und Nachweise

ORD-Eintrag
ord-55517286cefe4e3da610e3b6166d9f36
Quelldatensatz
uspto-grants-2003_02
Patentnummer
US06514968B1

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