Diethyl Ether → 2-Ethylcyclohexanone

HRID 483129

Reaktionsgleichung

Reaktionsgleichung von HRID 483129
[CH2:1]([CH:3]1[CH2:8][CH2:7][CH2:6][CH2:5][CH:4]1[OH:9])[CH3:2].C(O)(C)C.CCOCC>CC(C)=O.CC(C)=O.OS(O)(=O)=O.O=[Cr](=O)=O>[CH2:1]([CH:3]1[CH2:8][CH2:7][CH2:6][CH2:5][C:4]1=[O:9])[CH3:2]

Komponenten

6

Edukt 3

HCID 3283Diethyl EtherHCID 3776IsopropanolHCID 195762-Ethylcyclohexanol

Produkt 1

HCID 204742-EthylcyclohexanoneAusbeute 91,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 180AcetoneLösungsmittelHCID 131709961Jones' reagentLösungsmittel

Versuchsvorschrift

2-Ethylcyclohexanol (1.6 moles, 204 g, 226 ml) was stirred in 3.2 l of acetone at 0° C. and treated with 8N Jones reagent (prepared from 106.8 g of CrO3 suspended in 92 ml of concentrated sulfuric acid and diluted to 400 ml with water) until the orange color persisted (~430 ml). Isopropanol was then added to turn the solution green again after which it was poured into 2 l of ether. The product was washed with 6×500 ml of brine, dried over MgSO4 and stripped of solvent. Short path distillation (b.p. 80°-85° C. at 25 mm) afforded 184 g (1.46 moles, 91%) of 2-ethylcyclohexanone as a colorless oil.

Aufarbeitung

  1. washThe product was washed with 6×500 ml of brine
  2. dry with materialdried over MgSO4
  3. distillationShort path distillation (b.p. 80°-85° C. at 25 mm)

Quellen und Nachweise

ORD-Eintrag
ord-2a97921e209b4c018994aacc5cfb490d
Quelldatensatz
uspto-grants-1986_03
Patentnummer
US04578398

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