IN-SITU GENERATION OF RUTHENIUM CATALYSTS FOR OLEFIN METATHESIS

摘要

The present invention relates to a process for preparing olefins by means of metathesis, which comprises the following stepsa. provision of an olefin reaction mixture containing at least one olefin,b. addition of a ruthenium compound of the general formula [RuX₂L¹_xL²_y]_z (I), where X=anionic ligand; L¹=uncharged π-bonding ligand; L²=uncharged electron donor ligand; x=0, 1; y=1, 2, 3; z=1, 2,c. addition of a Lewis acid and/or an anionic, noncoordinating salt,d. reaction at temperatures in the range from 30° C. to 140° C.,where no addition of an alkyne or alkynol is carried out.;The invention further relates to the use of this process in metathesis reactions.