Acetic Anhydride → HCID 86745022, Verbindung

HRID 2249207Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2249207
[CH3:1][O:2][C:3]1[CH:9]=[C:8]([OH:10])[C:7]([CH2:11][CH:12]=[C:13]([CH3:15])[CH3:14])=[CH:6][C:4]=1[OH:5].[C:16]([O:19]C(=O)C)(=[O:18])[CH3:17]>N1C=CC=CC=1>[C:16]([OH:19])(=[O:18])[CH3:17].[C:16]([OH:19])(=[O:18])[CH3:17].[CH3:1][O:2][C:3]1[CH:9]=[C:8]([OH:10])[C:7]([CH2:11][CH:12]=[C:13]([CH3:15])[CH3:14])=[CH:6][C:4]=1[OH:5]

Komponenten

4

Edukt 2

HCID 7918Acetic AnhydrideHCID 3344962-Methoxy-5-(3-methylbut-2-enyl)benzene-1,4-diol

Produkt 1

HCID 86745022HCID 86745022, VerbindungAusbeute 78 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1049PyridineLösungsmittel

Versuchsvorschrift

A mixture of 2-methoxy-5-(3-methyl-2-butenyl)hydroquinone (2.35 g) and acetic anhydride (4.6 g) in dry pyridine (20 ml) was stirred for 2 hours at ambient temperature. The mixture was poured into ice water (50 ml) and the separated oil was extracted twice with diethyl ether. The combined extracts were washed twice with diluted hydrochloric acid, dried, and concentrated in vacuo to give a white solid, which was recrystallized from n-hexane to yield 2-methoxy-5-(3-methyl-2-butenyl)hydroquinone diacetate as white crystals (2.89 g).

Aufarbeitung

  1. extractionthe separated oil was extracted twice with diethyl ether
  2. washThe combined extracts were washed twice with diluted hydrochloric acid
  3. customdried
  4. concentrationconcentrated in vacuo
  5. customto give a white solid, which
  6. customwas recrystallized from n-hexane

Quellen und Nachweise

ORD-Eintrag
ord-7142702301024cee9392a938f4ca62b5
Quelldatensatz
uspto-grants-1991_08
Patentnummer
US05043354

Notizen zur Reaktion

Wird geladen…