Potassium Permanganate → 1-Phenyl-1-[4-(4-pyridyl)-2-thiazolyl]methanone

HRID 4352

Reaktionsgleichung

Reaktionsgleichung von HRID 4352
[CH2:1]([C:8]1[S:9][CH:10]=[C:11]([C:13]2[CH:18]=[CH:17][N:16]=[CH:15][CH:14]=2)[N:12]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Mn]([O-])(=O)(=O)=[O:20].[K+]>C1C=CC=CC=1.O.[I-].C([N+](CCCCCC)(CCCCCC)CCCCCC)CCCCC>[C:2]1([C:1]([C:8]2[S:9][CH:10]=[C:11]([C:13]3[CH:14]=[CH:15][N:16]=[CH:17][CH:18]=3)[N:12]=2)=[O:20])[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

6

Edukt 2

HCID 516875Potassium PermanganateHCID 140969524-(2-Benzyl-1,3-thiazol-4-yl)pyridine

Produkt 1

HCID 140969581-Phenyl-1-[4-(4-pyridyl)-2-thiazolyl]methanoneAusbeute 18,8 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 75056Tetrahexylammonium iodideKatalysatorHCID 241BenzeneLösungsmittelHCID 962WaterLösungsmittel

Versuchsvorschrift

To a mixture of 2-benzyl-4-(4-pyridyl)thiazole (3.00 g, 0.01 mol) and potassium permanganate (3.16 g, 0.02 mol) in benzene (30 mL) and water (60 mL) was added tetrahexyl ammonium iodide (0.96 g, 0.02 mol). The biphasic mixture was heated at reflux for 15 hours. After cooling the organic layer was separated and concentrated. The residue was taken up in ethyl acetate, filtered through silica gel, concentrated and chromatographed (ethyl acetate/hexane as eluant). Recrystallization from ethyl acetate/hexane afforded 1-phenyl-1-[4-(4-pyridyl)-2-thiazolyl]methanone (0.50 g, 11%). mp. 135°-136° C.

Aufarbeitung

  1. temperatureThe biphasic mixture was heated
  2. temperatureat reflux for 15 hours
  3. temperatureAfter cooling the organic layer
  4. customwas separated
  5. concentrationconcentrated
  6. filtrationfiltered through silica gel
  7. concentrationconcentrated
  8. customchromatographed (ethyl acetate/hexane as eluant)
  9. customRecrystallization from ethyl acetate/hexane

Quellen und Nachweise

ORD-Eintrag
ord-fdefa7a16d504159aa72430f307694ae
Quelldatensatz
uspto-grants-1988_02
Patentnummer
US04725606

Verknüpfte Notizen

Wird geladen…