Catalyst complex with carbene ligand

Abstract

Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbine ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.

1 : A catalytic complex of the formula:  
       
         
           
           
               
               
           
         
         wherein M is Os or Ru;  
         R and R 1  are independently selected from the group consisting of hydrogen, C 1 -C 20  alkyl, C 2 -C 20  alkenyl, C 2 -C 20  alkynyl, C 2 -C 20  alkoxycarbonyl, aryl, C 1 -C 20  carboxylate, C 1 -C 20  alkoxy, C 2 -C 20  alkenyloxy, C 2 -C 20  alkynyloxy, and aryloxy, each R and R 1  optionally being substituted with C 1 -C 5  alkyl, halogen, C 1 -C 6  alkoxy, or with a phenyl group substituted with halogen, C 1 -C 5  alkyl or C 1 -C 5  alkoxy;  
         X and X 1  are independently selected from the group consisting of anionic ligands;  
         L is selected from the group consisting of phosphine, sulfonated phosphine, phosphite, phosphinite, phosphonite, ether, amine, amide, sulfoxide, carbonyl, nitrosyl, pyridine and thioether; and  
         L 1  is a nucleophilic carbene.