Patent ID: 9562116
Date: 2017-02-07
CPC Classifications: B01J,C07F,C08F

Claim:
1. Method for the preparation of a ruthenium-based carbene catalyst with a chelating alkylidene ligand comprising the reaction of a ruthenium (II)-alkylidene complex with an olefin derivative according to the equation: wherein L is a substituted or unsubstituted imidazole or imidazolidine ring, X Y wherein in said formula R Py is an N-heterocyclic two-electron donor ligand selected from the group consisting of pyridine, 3-bromo-pyridine, 4-methyl-pyridine, quinolone, and piperidine, R a, b, c and d are, independently from each other, hydrogen, C Z is a heterodonor atom selected from the group consisting of oxygen (O), sulphur (S), and nitrogen (N), or a group comprising a heterodonor atom, R