TRANSITION METAL CARBENE COMPLEXES CONTAINING A CATIONIC SUBSTITUENT AS CATALYSTS OF OLEFIN METATHESIS REACTIONS

• Main Authors: GUAJARDO, PATRICIO EDUARDO ROMERO, PIERS, WARREN EDWARD
• Format: Patent
• Language: English; French
• Published: 31.03.2015
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

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, L1and L2 are neutral electron donor ligands, X1 and X2are 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. L'invention concerne des complexes organomEtalliques pouvant être utilisés en tant que catalyseurs de la mEtathEse des olEfines. Les complexes sont des carbEnes de mEtaux de transition du groupe 8 portant un substituant cationique et ayant la structure gEnErale (I) dans laquelle M reprEsente un mEtal de transition du groupe 8, L?1¿ et L?2¿ sont des ligands neutres donneurs d'Electrons, X?1¿ et X?2¿ sont des ligands anioniques, m est Egal A zEro ou 1, n est Egal A zEro ou 1, et R?1¿, W, Y et Z sont tels que dEfinis dans le prEsent document. L'invention fournit Egalement des procEdEs de synthEse des complexes et Egalement des procEdEs d'utilisation des complexes en tant que catalyseurs de la mEtathEse des olEfines.