Epichlorohydrin → 2-[(2-Tert-butyl-4-methoxyphenoxy)methyl]oxirane

HRID 1720010

Reaktionsgleichung

Reaktionsgleichung von HRID 1720010
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[C:10]([CH3:13])([CH3:12])[CH3:11].[CH2:14]([CH:16]1[O:18][CH2:17]1)Cl.C(=O)([O-])[O-].[K+].[K+]>C(C(C)=O)C>[O:18]1[CH2:17][CH:16]1[CH2:14][O:1][C:2]1[CH:7]=[CH:6][C:5]([O:8][CH3:9])=[CH:4][C:3]=1[C:10]([CH3:13])([CH3:12])[CH3:11]

Komponenten

5

Edukt 3

HCID 7835EpichlorohydrinHCID 8456Butylated HydroxyanisoleHCID 11430Potassium Carbonate

Produkt 1

HCID 33361402-[(2-Tert-butyl-4-methoxyphenoxy)methyl]oxiraneAusbeute 84,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6569Methyl Ethyl KetoneLösungsmittel

Versuchsvorschrift

In 150 ml of methyl ethyl ketone were dissolved 4.5 g (0.025 mole) of 4-hydroxy-3-tert-butylanisole and 8 g of epichlorohydrin, and 7.0 g of potassium carbonate is added to the resultant solution, followed by heating under reflux for 8 hours. The precipitated inorganic salt is filtered out, and the filtrate is concentrated. The oily-formed residue is extracted with ethyl acetate, and the extract is washed successively with 1% aqueous sodium hydroxide and water, and the ethyl acetate is distilled off to give about 5 g of 4-(2,3-epoxypropoxy)-3-tert-butylanisole in the form of oily substance. The oily substance and 4.6 g of tert-butylamine are dissolved in 100 ml of methanol, followed by heating under reflux for 10 hours, and the solvent is distilled off. The oily residue is admixed with 200 ml of water, and the mixture is made acid with hydrochloric acid, stirred and extracted with isopropyl ether to remove the unreacted materials. The resulting aqueous solution is concentrated under reduced pressure, and the white crystals that crystallize out are recovered by filtration. Recrystallization from water gives 1.3 g of the objective compound, m.p. of 177° to 179° C.

Aufarbeitung

  1. temperatureby heating
  2. temperatureunder reflux for 8 hours
  3. filtrationThe precipitated inorganic salt is filtered out
  4. concentrationthe filtrate is concentrated
  5. extractionThe oily-formed residue is extracted with ethyl acetate
  6. washthe extract is washed successively with 1% aqueous sodium hydroxide and water
  7. distillationthe ethyl acetate is distilled off

Quellen und Nachweise

ORD-Eintrag
ord-5ced2ab1af2b4f8dab777d2664af72c7
Quelldatensatz
uspto-grants-1996_04
Patentnummer
US05504087

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