Methane → 3,4,5-Trimethoxyhydrocinnamic acid

HRID 725290

Reaktionsgleichung

Reaktionsgleichung von HRID 725290
[C:1](=[O:4])([O-])[O-:2].[K+].[K+].[CH3:7][O:8][C:9]1[CH:10]=[C:11]([C:19](=C)[C:20](O)=O)[CH:12]=[C:13]([O:17][CH3:18])[C:14]=1[O:15][CH3:16].C.[H][H]>[Pd].O>[CH3:18][O:17][C:13]1[CH:12]=[C:11]([CH2:19][CH2:20][C:1]([OH:2])=[O:4])[CH:10]=[C:9]([O:8][CH3:7])[C:14]=1[O:15][CH3:16]

Komponenten

7

Edukt 4

HCID 297MethaneHCID 11430Potassium CarbonateHCID 208491922-(3,4,5-Trimethoxyphenyl)prop-2-enoic acidHCID 178418361HCID 178418361, Verbindung

Produkt 1

HCID 648603,4,5-Trimethoxyhydrocinnamic acidAusbeute 167,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 962WaterLösungsmittel

Versuchsvorschrift

6.8 g of potassium carbonate were added to a solution of 21.44 g of 3,4,5-trimethoxyphenylpropenoic acid and 45 ml of water and the mixture was hydrogenated for one hour under a pressure of 1200-1300 mbar in the presence of 1.8 g of activated charcoal with 10% of palladium during which 2.1 liters of hydrogen were absorbed. Filtration was carried out, followed by washing with water and acidifying with 50 ml of hydrochloric acid (2N). The product was separated off, washed with water and dried under reduced pressure at ambient temperature to obtain 19.8 g of the expected product melting at 102°-103° C.

Aufarbeitung

  1. customwere absorbed
  2. filtrationFiltration
  3. washby washing with water and acidifying with 50 ml of hydrochloric acid (2N)
  4. customThe product was separated off
  5. washwashed with water
  6. customdried under reduced pressure at ambient temperature

Quellen und Nachweise

ORD-Eintrag
ord-451863dc68f5423fa2f463b5bd9d4b08
Quelldatensatz
uspto-grants-1998_01
Patentnummer
US05705704

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