PROCEDE DE PREPARATION D'UN DERIVE D'ACETONITRILE ET DERIVE OBTENU PAR CE PROCEDE

L'invention concerne un procédé de préparation d'un dérivé d'acétonitrile ainsi que le dérivé obtenu par ce procédé. Suivant le procédé de l'invention, on obtient le di-n-propylacétonitrile de formule : Process for preparing di-N-propylacetonitrile, of formula: ** (see formula) ** Characterized in that, in a single step, sodium N-propylate is added, in an N-propanol medium, to a reaction medium formed from a cyanoacetate of the general formula: ** (see formula) ** Wherein r is an alkyl radical with 1 to 4 carbon atoms, and N-propyl bromide or iodide; the alkylation reaction taking place under reflux; the obtained crude ester is saponified with a 10-20% solution of sodium or potassium hydroxide; the salt thus formed is acidified with a strong acid, to give crude di-N-propylcyanoacetic acid, which is decarboxylated by heating at a temperature between 140 and 190º c, to provide the di-N-propylacetonitrile. (Machine-translation by Google Translate, not legally binding)