Trifluoroacetic acid → 5-cyclopropyl-2-phenyl-1H-indole

HRID 2400277Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2400277
C(OC(=O)[NH:7][C:8]1[CH:13]=[CH:12][C:11]([CH:14]2[CH2:16][CH2:15]2)=[CH:10][C:9]=1[CH2:17][C:18](=O)[C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1)(C)(C)C.FC(F)(F)C(O)=O>ClCCl>[CH:14]1([C:11]2[CH:10]=[C:9]3[C:8](=[CH:13][CH:12]=2)[NH:7][C:18]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[CH:17]3)[CH2:16][CH2:15]1

Komponenten

4

Edukt 2

HCID 6422Trifluoroacetic acidHCID 131731722Tert-butyl[4-cyclopropyl-2-(2-oxo-2-phenylethyl)phenyl]carbamate

Produkt 1

HCID 696709445-cyclopropyl-2-phenyl-1H-indoleAusbeute 85,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

To a solution of tert-butyl[4-cyclopropyl-2-(2-oxo-2-phenylethyl)phenyl]carbamate (561 mg) in dichloromethane (8 mL) was added dropwise trifluoroacetic acid (1.6 mL) under ice-cooling. The mixture was heated to room temperature, and then stirred for 23 hours. The reaction mixture was concentrated under reduced pressure. To the residue were added ethyl acetate and saturated aqueous sodium hydrogen carbonate solution to separate the organic layer. The organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluting solvent: ethyl acetate-hexane) to obtain the title compound (317 mg). 1H-NMR (CDCl3) δ ppm: 0.65-0.75 (2H, m), 0.85-1.00 (2H, m), 1.95-2.10 (1H, m), 6.70-6.80 (1H, m), 6.90-7.00 (1H, m), 7.25-7.50 (5H, m), 7.60-7.70 (2H, m), 8.24 (1H, br s).

Aufarbeitung

  1. temperaturecooling
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. additionTo the residue were added ethyl acetate and saturated aqueous sodium hydrogen carbonate solution
  4. customto separate the organic layer
  5. washThe organic layer was washed with saturated brine
  6. dry with materialdried over anhydrous sodium sulfate
  7. concentrationconcentrated under reduced pressure
  8. customThe residue was purified by silica gel column chromatography (eluting solvent: ethyl acetate-hexane)

Quellen und Nachweise

ORD-Eintrag
ord-c46d49bd7d2b4c32b3c3d6cc355df3b6
Quelldatensatz
uspto-grants-2014_08
Patentnummer
US08796247B2

Notizen zur Reaktion

Wird geladen…