Reaktion #8442

Reaktionsgleichung

acetic anhydride

triethylamine

dimethylaminopyridine

product

bis-α-naphthyl-(4-[2-hydroxy-ethoxy]-2-hydroxy-phenyl)-triazine

→

bis-αnaphthyl-(4-[2-acetoxy-ethoxy]-2-hydroxy-phenyl)-triazine

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturThe reaction mixture is heated to boiling
2. 2
   Sonstigethe solvent is removed in vac
3. 3
   WaschenThe organic phase is washed with water
4. 4
   Trocknendried with magnesium sulfate
5. 5
   SonstigeAfter removal of the solvent
6. 6
   Sonstigethe residue is chromatographed on silica gel
7. 7
   Sonstigeyielding the product

Vorschrift

9.11 g of acetic anhydride, 18.1 g of triethylamine and 0.73 g of dimethylaminopyridine in 400 ml of anhydrous dichloromethane are added to the product from Example A9. The reaction mixture is heated to boiling. When the reaction is complete (monitoring by TLC), the solvent is removed in vac. and the residue is taken up in dichloromethane. The organic phase is washed with water and dried with magnesium sulfate. After removal of the solvent, the residue is chromatographed on silica gel, yielding the product having the following NMR data:

Quelle