Sulfuric Acid → chrysanthemic acid d-trans-form

HRID 267571

Reaktionsgleichung

Reaktionsgleichung von HRID 267571
CC[O:3][C:4]([CH:6]1[C:8]([CH3:10])([CH3:9])[CH:7]1[CH:11]=[C:12]([CH3:14])[CH3:13])=[O:5].S(=O)(=O)(O)O>>[CH3:13][C:12]([CH3:14])=[CH:11][C@H:7]1[C:8]([CH3:9])([CH3:10])[C@@H:6]1[C:4]([OH:5])=[O:3]

Komponenten

3

Edukt 2

HCID 1118Sulfuric AcidHCID 7334Ethyl chrysanthemate

Produkt 1

HCID 16747chrysanthemic acid d-trans-formAusbeute 80,5 %

Versuchsvorschrift

The water layer was made acidic with sulfuric acid and extracted with toluene (80 g) two times. The toluene layer was washed and evaporated, and the residue was distilled under reduced pressure to give trans-chrysanthemic acid (47.1 g; trans-isomer, 80.5 %). B.P. 110° to 114°C/2 mmHg.

Aufarbeitung

  1. extractionextracted with toluene (80 g) two times
  2. washThe toluene layer was washed
  3. customevaporated
  4. distillationthe residue was distilled under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-3556e4eb9bea4bf1a3c659a1dcdfbbb2
Quelldatensatz
uspto-grants-1976_03
Patentnummer
US03943167

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