Catechol → o-(1-Methoxyethoxy)-phenol

HRID 65899

Reaktionsgleichung

Reaktionsgleichung von HRID 65899
[C:1]1([C:3](=[CH:5][CH:6]=[CH:7][CH:8]=1)[OH:4])[OH:2].[CH:9]([O:11][CH3:12])=[CH2:10].Cl.[OH-].[Na+]>C1(C)C=CC=CC=1>[CH3:12][O:11][CH:9]([O:2][C:1]1[CH:8]=[CH:7][CH:6]=[CH:5][C:3]=1[OH:4])[CH3:10]

Komponenten

6

Edukt 4

HCID 289CatecholHCID 313Hydrochloric AcidHCID 7861Methyl vinyl etherHCID 14798Sodium Hydroxide

Produkt 1

HCID 20431181o-(1-Methoxyethoxy)-phenol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

110 parts by weight of pyrocatechol is suspended in 100 parts by weight of toluene. At +5° C., 64 parts by weight of vinylmethyl ether at -40° C. is introduced all at once into the suspension and a drop of concentrated hydrochloric acid is then added. The mixture is heated, with stirring, to about +20° C., whereupon the reaction is initiated and the temperature in the flask rises to about 65° C. If necessary, ice water may be used for external cooling. The mixture is kept for 30 minutes at 65° C. and 5 parts by weight of 2N NaOH is then added. After the mixture has been cooled and dried with Na2SO4 the solvent is evaporated in a rotary evaporator and distillation carried out in vacuo.

Aufarbeitung

  1. temperatureThe mixture is heated
  2. customrises to about 65° C
  3. temperatureAfter the mixture has been cooled
  4. dry with materialdried with Na2SO4 the solvent
  5. customis evaporated in a rotary evaporator and distillation

Quellen und Nachweise

ORD-Eintrag
ord-0642839368094bf1b705146b7cff2353
Quelldatensatz
uspto-grants-1978_12
Patentnummer
US04129601

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