Acetaldehyde → 1-(3,3-Dimethyl-2-norbornyl)-2-propanone

HRID 867048

Reaktionsgleichung

Reaktionsgleichung von HRID 867048
[CH:1]12[CH2:10][CH:7]([CH2:8][CH2:9]1)[C:5](=[CH2:6])[C:2]2([CH3:4])[CH3:3].[CH:11](=[O:13])[CH3:12].CC1C=CC(C)=CC=1C>>[CH3:3][C:2]1([CH3:4])[CH:1]2[CH2:10][CH:7]([CH2:8][CH2:9]2)[CH:5]1[CH2:6][C:11](=[O:13])[CH3:12]

Komponenten

4

Edukt 3

HCID 177AcetaldehydeHCID 6616CampheneHCID 72471,2,4-Trimethylbenzene

Produkt 1

HCID 203481821-(3,3-Dimethyl-2-norbornyl)-2-propanoneAusbeute 40,5 %

Versuchsvorschrift

A 1 liter jacketed photochemical reaction vessel equipped with magnetic stirrer and pyrex immersion well is charged with 418 g camphene (807, Aldrich) and 372 g acetaldehyde and 30 g diacetyl (photochemical hydrogen abstractor). The mixture is irradiated with a 450 medium pressure mercury lamp (Hanovia) for 55 hours, during which time five 30 g portions of diacetyl are added at varying intervals. The reaction mixture is combined with 150 g of 1,2,4-trimethyl benzene and washed with water. The material is distilled without fractionation and then redistilled through a 5 foot Vigreux column to yield 224 g colorless product, b.p. 70° -72° (55 mm Hg).

Aufarbeitung

  1. customequipped with magnetic stirrer
  2. additionare added
  3. washwashed with water
  4. distillationThe material is distilled without fractionation
  5. distillationredistilled through a 5 foot Vigreux column

Quellen und Nachweise

ORD-Eintrag
ord-ce7a35802d644c958146a5567a7853ab
Quelldatensatz
uspto-grants-1978_07
Patentnummer
US04102763

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