Catalytic system with a prolonged life span and preservation for the metathesis of olefins

摘要

improved catalytic systems with long service life, comprising: (a) a first compound of tungsten, (b) an organometallic compound, and (c) a partially or totally fluorinated organic compound.process of stabilization of these catalytic systems, including the solution of (a) in an organic solvent, (b) placing in contact with (a), agitation and heating between 0 and 100 c for 0.5 to 60 minutes, and then the introduction of (c) in the mixture of (a). (b).the application of these catalyst systems for olefin metathesis on stable functional groups or on such groups.