Acetic Acid → Acetic acid, cyclopent-2-en-1-yl ester

HRID 742815

Reaktionsgleichung

Reaktionsgleichung von HRID 742815
[CH:1]1[CH2:5][CH2:4][CH2:3][CH:2]=1.OO.[C:8]([OH:11])(=[O:10])[CH3:9]>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1(=O)C=CC(=O)C=C1>[C:8]([O:11][CH:1]1[CH2:5][CH2:4][CH:3]=[CH:2]1)(=[O:10])[CH3:9]

Komponenten

6

Edukt 3

HCID 176Acetic AcidHCID 784Hydrogen PeroxideHCID 8882Cyclopentene2×

Produkt 1

HCID 140735Acetic acid, cyclopent-2-en-1-yl esterAusbeute 60 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 4650QuinoneKatalysatorHCID 167845palladium(II) acetateKatalysator

Versuchsvorschrift

Acetoxylation du cyclopentene A 500 ml three-neck flask is charged with 15 g of cyclopentene (0.22 moles), 150 g of acetic acid, 0.77 g of benzoquinone (7 mmoles) and 80 mg of palladium acetate (0.35 mmoles). The temperature is taken to 50°, then 12 g (0.25 moles) of 70% by weight hydrogen peroxide are introduced in 8 h, and the reaction is allowed to proceed for a further 2 h while maintaining the temperature at 50°. The acetic acid is then distilled (35°, 20×102Pa). The residue is distilled under vacuum (56°-60°, 15×102Pa) to provide cyclopent-2-en-1-yl acetate (13 g, yield 60%). cyclopent-2-en-1-yl acetate

Aufarbeitung

  1. customis taken to 50°
  2. temperaturewhile maintaining the temperature at 50°
  3. distillationThe acetic acid is then distilled (35°, 20×102Pa)
  4. distillationThe residue is distilled under vacuum (56°-60°, 15×102Pa)

Quellen und Nachweise

ORD-Eintrag
ord-6875652919ab40be9f354de21e7ca2d8
Quelldatensatz
uspto-grants-1996_09
Patentnummer
US05554786

Verknüpfte Notizen

Wird geladen…