Potassium Hydroxide → CID 53688637

HRID 1702962Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1702962
[OH-].[K+].[CH3:3][C:4]([CH:11]([CH3:13])[CH3:12])=[CH:5][C:6]([O:8]CC)=[O:7]>S(=O)(=O)(O)O>[CH3:3][C:4]([CH:11]([CH3:13])[CH3:12])=[CH:5][C:6]([OH:8])=[O:7]

Komponenten

4

Edukt 2

HCID 14797Potassium HydroxideHCID 281491Ethyl 3,4-dimethyl-2-pentenoate

Produkt 1

HCID 53688637CID 53688637

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1118Sulfuric AcidLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A mixture of aqueous potassium hydroxide solution (0.5 N, 92 mL) and ethyl 3,4-dimethyl-2-pentenoate (XI, 5.5 g) was stirred at 80° C. for 17 hours until the oily supernatent layer disappeared. The reaction mixture was cooled, acidified with aqueous sulfuric acid, (0.5 N, ca. 100 mL), and extracted with ether. The ethereal layer was washed with water, dried over anhydrous magnesium sulfate, filtered, and evaporated under reduced pressure to afford 3,4-dimethyl-2-pentenoic acid as a yellow liquid (X, 4.1 g, 91%).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled
  2. extractionextracted with ether
  3. washThe ethereal layer was washed with water
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. customevaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-c7bd73a29c464802a1af2a564e5a2444
Quelldatensatz
uspto-grants-1982_09
Patentnummer
US04350638

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