FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of dinitrile compounds. Method involves the hydrocyaniding reaction of mononitrile compounds comprising unsaturated double bond with hydrogen cyanide in the presence of catalytic system comprising a metalloorganic chelate compound and co-catalyst. Method involves the following successive steps: (1) treatment of reaction medium E1 prepared after hydrocyaniding of unsaturated nitrile compounds in order to separate organometallic chelate compound of the catalytic system by liquid-phase extraction and to obtain the second medium E; (2) treatment of abovementioned second medium E2 with ion-exchange resin in order to extract at least metal ions arising from co-catalyst and to obtain the third medium E3; (3) isolating formed dinitriles from the third medium E3 wherein organometallic chelate compound is prepared from nickel compounds and organophosphorus ligand and co-catalyst represents Lewis acid. Method provides isolation and regeneration of Lewis acid from the reaction medium followed by possibility for its repeated using at the hydrocyaniding step.
EFFECT: improved method of synthesis.
12 cl, 2 tbl, 4 ex
