Patent ID: 6960665

Claim:
A process for arylating, vinylating or alkynating a nucleophilic compound, comprising the step of reacting said nucleophilic compound which is a pyrazole with a compound carrying a leaving group, wherein the reaction is carried out in the presence of a catalytically effective amount of a catalyst comprising: a metallic element M selected from the group consisting of the elements of the groups (VIII), (Ib) and (IIb) of the periodic table, and at least one at least bi-dentate ligand, comprising at least two chelating atoms, namely at least one oxygen atom and at least one nitrogen atom of the following formulae (Ia 1 ) or (Ia 2 ): wherein: R a is: R b , which is identical or different to R a , represents a hydrocarbon group containing 1 to 20 carbon atoms, said hydrocarbon group being: a linear or branched, saturated or unsaturated, acyclic aliphatic group, a saturated, unsaturated or aromatic, monocyclic or polycyclic, carbocyclic or heterocyclic, group, or a concatenation thereof, and R c represents a hydrogen atom.