p-Divinylbenzene → 2-(4-Ethenylphenyl)oxirane

HRID 1904568Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1904568
[CH:1]([C:3]1[CH:8]=[CH:7][C:6]([CH:9]=[CH2:10])=[CH:5][CH:4]=1)=[CH2:2].C(=O)([O-])[OH:12].[Na+].ClC1C=CC=C(C(OO)=O)C=1>C1(C)C=CC=CC=1>[CH:1]([C:3]1[CH:8]=[CH:7][C:6]([CH:9]2[O:12][CH2:10]2)=[CH:5][CH:4]=1)=[CH2:2]

Komponenten

5

Edukt 3

HCID 66041p-DivinylbenzeneHCID 70297m-Chloroperbenzoic acidHCID 516892Sodium Bicarbonate

Produkt 1

HCID 1120402-(4-Ethenylphenyl)oxiraneAusbeute 231,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel2×

Versuchsvorschrift

In a one-liter reactor equipped with a stirrer and a thermometer were placed 25 g of p-divinylbenzene, 40 g of sodium hydrogencarbonate and 400 ml of toluene. Thereto was dropwise added 100 g of a toluene solution containing 40% by weight of m-chloroperbenzoic acid at 5° C. with stirring. Stirring was continued for further 10 hours at 5° C. After completion of the reaction, the reaction mixture was washed with an aqueous sodium hydrogencarbonate solution and dried with anhydrous magnesium sulfate. The drying agent was removed by filtration and the filtrate was subjected to vacuum distillation to remove toluene. The residue was purified by distillation to obtain 65 g of 4-vinylstyrene oxide (1 Torr, 74° C.).

Aufarbeitung

  1. customIn a one-liter reactor equipped with a stirrer
  2. stirringStirring
  3. customAfter completion of the reaction
  4. washthe reaction mixture was washed with an aqueous sodium hydrogencarbonate solution
  5. dry with materialdried with anhydrous magnesium sulfate
  6. customThe drying agent was removed by filtration
  7. distillationthe filtrate was subjected to vacuum distillation
  8. customto remove toluene
  9. distillationThe residue was purified by distillation

Quellen und Nachweise

ORD-Eintrag
ord-55a633f2eb474d9f9c07509372068c0a
Quelldatensatz
uspto-grants-1989_06
Patentnummer
US04839261

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