Abietic Acid → Dehydroabietic Acid

HRID 1744411

Reaktionsgleichung

Reaktionsgleichung von HRID 1744411
[CH3:1][CH:2]([C:4]1[CH2:13][CH2:12][C@H:11]2[C:6](=[CH:7][CH2:8][C@H:9]3[C@@:17]([C:19]([OH:21])=[O:20])([CH3:18])[CH2:16][CH2:15][CH2:14][C@@:10]32[CH3:22])[CH:5]=1)[CH3:3]>[Pd].C(O)C>[CH3:3][CH:2]([C:4]1[CH:13]=[CH:12][C:11]2[C@@:10]3([CH3:22])[CH2:14][CH2:15][CH2:16][C@:17]([C:19]([OH:21])=[O:20])([CH3:18])[C@@H:9]3[CH2:8][CH2:7][C:6]=2[CH:5]=1)[CH3:1]

Komponenten

4

Edukt 1

HCID 10569Abietic Acid

Produkt 1

HCID 94391Dehydroabietic AcidAusbeute 61,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 702EthanolLösungsmittel

Reaktionsbedingungen

Temperatur
250 °C

Versuchsvorschrift

115 g of abietic acid was put into a 1000 ml three-neck bottle , and then 2.3 g of 5% palladium/carbon catalyst was added in. The mixture was stirred at 250° C. (oil bath) for 2 hours, after slightly cooled down, 200 ml of 95% ethanol was added. The mixture was refluxed until completely dissolved, filtered when it was warm, allowed to stand still and to be crystallized to give 70 g of dehydroabietic acid after filtered and dried.

Aufarbeitung

  1. temperatureafter slightly cooled down
  2. temperatureThe mixture was refluxed
  3. dissolutionuntil completely dissolved
  4. filtrationfiltered when it
  5. temperaturewas warm
  6. customto be crystallized

Quellen und Nachweise

ORD-Eintrag
ord-f7fcbda1bfd24914a21fa340a3271e7e
Quelldatensatz
uspto-grants-2006_03
Patentnummer
US07015343B2

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