Reaktion #690448

Reaktionsgleichung

daidzein

acetic anhydride

diacetate

→

daidzein diacetate

Ausbeute 90.0%

Lösungsmittel

pyridine

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturwas heated on an oil bath at 105-110 C
2. 2
   Sonstigecrystallised from the solution
3. 3
   FiltrationThe product was filtered
4. 4
   Waschenwashed thoroughly with water
5. 5
   Sonstigerecrystallised from methanol

Vorschrift

A mixture of daidzein (2.0 g, 7.9 mmol), acetic anhydride (10 ml) and pyridine (2 ml) was heated on an oil bath at 105-110 C. for 1 h. After cooling the mixture to room temperature, it was stirred for a further 30 min during which time the diacetate crystallised from the solution. The product was filtered, washed thoroughly with water and recrystallised from methanol to yield daidzein diacetate as colourless prisms (2.4 g, 90%).

Quelle