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Imidazole → 3-(1H-Imidazol-1-YL)-5-(trifluoromethyl)aniline

HRID 572960
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 572960
[NH2:1][C:2]1[CH:3]=[C:4]([C:9]([F:12])([F:11])[F:10])[CH:5]=[C:6](Br)[CH:7]=1.OC1C=CC=C2C=1N=CC=C2.[NH:24]1[CH:28]=[CH:27][N:26]=[CH:25]1.C(=O)([O-])[O-].[K+].[K+].[OH-].[NH4+]>CS(C)=O.[Cu]I.CCOC(C)=O.O>[N:24]1([C:6]2[CH:7]=[C:2]([CH:3]=[C:4]([C:9]([F:10])([F:12])[F:11])[CH:5]=2)[NH2:1])[CH:28]=[CH:27][N:26]=[CH:25]1
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

10

Edukt 5

HCID 795ImidazoleHCID 19238-HydroxyquinolineHCID 11430Potassium CarbonateHCID 14923Ammonium HydroxideHCID 27358803-Bromo-5-(trifluoromethyl)aniline

Produkt 1

HCID 442226373-(1H-Imidazol-1-YL)-5-(trifluoromethyl)anilineAusbeute 66,2 %

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 679Dimethyl SulfoxideLösungsmittelHCID 962WaterLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

A mixture of 3-Amino-5-bromobenzotrifluoride (4.0 g, 0.0167 mol), 8-hydroxy quinoline (0.362 g, 0.0025 mol), CuI (0.476 g, 0.025 mol), imidazole (1.36 g, 0.0199 mol), and potassium carbonate (2.52 g, 0.0183 mol) in 17 mL of DMSO (degassed with argon for ˜10 min) was heated at 120° C. under an atmosphere of argon for 15 h; the HPLC indicated no starting material. A 14% aqueous solution of ammonium hydroxide was added to the cooled mixture and this was stirred for 1 h at ambient temperature. Water (50 mL) and EtOAc (200 mL) were added and the aqueous layer was extracted with EtOAc (3×30 mL). The combined organic layers were dried over Na2SO4 and concentrated. The crude product was purified by silica gel flash chromatography (eluted with EtOAc/hexanes) to provide 2.51 g of product.

Aufarbeitung

  1. extractionthe aqueous layer was extracted with EtOAc (3×30 mL)
  2. dry with materialThe combined organic layers were dried over Na2SO4
  3. concentrationconcentrated
  4. customThe crude product was purified by silica gel flash chromatography (eluted with EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-13f18e0cbede4335b08fe127c6db8ed8
Quelldatensatz
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09029533B2

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