Process for the preparation of (e)-5-(2-bromovinyl)-2'-deoxyuridine

   
   

Process of preparing (E)-5-(2-bromovynyl)-2'-deoxyuridine (Brivudine) characterized in that halogen-free solvent selected form esters or cyclic ethers are used in the bromination step of 5-ethyl-2'-deoxyuridine diacylate. The use of solvents is advantageous in respect of toxicity, discharge costs and environment protection.

Processus de la préparation (E)-5-(2-bromovynyl)-2'-deoxyuridine (Brivudine) caractérisés en esters de cette forme choisis par dissolvant halogène-libre ou éthers cycliques sont employés dans l'étape de bromation du diacylate 5-ethyl-2'-deoxyuridine. L'utilisation des dissolvants est avantageuse en ce qui concerne la toxicité, les coûts de décharge et la protection de l'environnement.

 
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