Abstract
Proceeded of creation of a connection carbon-carbon or carbonehétéroatome by reaction of an unsaturated compound carrying a group therefore and a nucleophilic compound bringing a carbon atom or a heteroatom (HE) likely to therefore replace the group, thus creating a connection DC or C-HE, in the presence of a catalyst containing copper and of a base characterized by the fact that the reaction takes place in the absence of a ligand and in a solvent of the nitrile type.