Transition metal carbene complexes containing a cationi substituent as catalysts of olefin metathesis reactions

摘要

Organometallic complexes suitable as olefin metathesis catalysts are provided. The complexes are Group 8 transition metal carbenes bearing a cationic substituent and having the general structure (I) wherein M is a Group 8 transition metal, L¹ and L² are neutral electron donor ligands, X¹ and X² are anionic ligands, m is zero or 1, n is zero or 1, and R¹, W, Y, and Z are as defined herein. Methods for synthesizing the complexes are also provided, as are methods for using the complexes as olefin metathesis catalysts.