Reaktion #56257

Reaktionsgleichung

adenosine-5'-carboxylic acid methyl ester

triethylamine

→

Adenosine-5'-carboxylic acid benzyl ester

Lösungsmittel

benzyl alcohol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeAfter termination of the reaction
2. 2
   Sonstigethe residue is triturated with ether for the removal of traces of amine and solvent
3. 3
   Filtrationafter filtering off with suction
4. 4
   Sonstigethe product is recrystallized from water

Vorschrift

5 g of adenosine-5'-carboxylic acid methyl ester are suspended in 200 ml of benzyl alcohol, with the addition of 7 g of triethylamine, and the reaction mixture heated to 100° C. for 5 hours, the methyl ester thereby going into solution. After termination of the reaction, the base and excess alcohol are stripped off in a vacuum, the residue is triturated with ether for the removal of traces of amine and solvent and, after filtering off with suction, the product is recrystallized from water. There are thus obtained 3.3 g (53% of theory) of adenosine-5'-carboxylic acid benzyl ester, which has a melting point of 144°-145° C.

Quelle