Epichlorohydrin → 7-(2,3-Epoxypropoxy)-2,2-dimethyl-4-phenylchroman

HRID 838895

Reaktionsgleichung

Reaktionsgleichung von HRID 838895
[OH:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[CH2:7][C:8]([CH3:13])([CH3:12])[O:9]2)=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:26]([CH:28]1[O:30][CH2:29]1)Cl>CC(C)=O>[O:30]1[CH2:29][CH:28]1[CH2:26][O:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]([C:14]3[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=3)[CH2:7][C:8]([CH3:13])([CH3:12])[O:9]2)=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 7835EpichlorohydrinHCID 11430Potassium CarbonateHCID 205705312,2-Dimethyl-7-hydroxy-4-phenylchroman

Produkt 1

HCID 233307567-(2,3-Epoxypropoxy)-2,2-dimethyl-4-phenylchromanAusbeute 95 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

A mixture of 7-hydroxy-2,2-dimethyl-4-phenylchroman (11.8g, .046 mole), anhydrous potassium carbonate (11.7g, 0.093 mole), epichlorohydrin (50ml) and dry acetone (50ml) was stirred and boiled under reflux for 6 hours, then cooled and filtered. The filtrate was evaporated in vacuo and the residual brown oil dissolved in ether, washed with water and dried (magnesium sulphate). Removal of the solvent gave 7-(2,3-epoxypropoxy)-2,2-dimethyl-4-phenylchroman as a pale brown solid (13.56g, 95%), m.p. 82°-85°, after crystallization from ethanol.

Aufarbeitung

  1. temperatureunder reflux for 6 hours
  2. temperaturecooled
  3. filtrationfiltered
  4. customThe filtrate was evaporated in vacuo
  5. dissolutionthe residual brown oil dissolved in ether
  6. washwashed with water
  7. dry with materialdried (magnesium sulphate)
  8. customRemoval of the solvent

Quellen und Nachweise

ORD-Eintrag
ord-635f87242d28449a9321f53824cbd9d3
Quelldatensatz
uspto-grants-1978_06
Patentnummer
US04093631

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