Reacción #56257

Ecuación de reacción

adenosine-5'-carboxylic acid methyl ester

triethylamine

→

Adenosine-5'-carboxylic acid benzyl ester

Disolventes

benzyl alcohol

Condiciones de reacción

Tratamiento posterior

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

Procedimiento

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.

Fuente