High activity metal carbene metathesis catalysts generated...

B - Operations – Transporting – 01 – J

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B01J 31/00 (2006.01) B01J 27/24 (2006.01) B01J 31/22 (2006.01) B01J 37/34 (2006.01) C07D 233/00 (2006.01) C07D 233/02 (2006.01) C07D 233/54 (2006.01) C07D 233/56 (2006.01) C07D 233/58 (2006.01) C08F 4/44 (2006.01) C08F 4/80 (2006.01) C08G 61/08 (2006.01)

Patent

CA 2441500

The invention provides a method of making a ruthenium or osmium carbene catalyst having an imidazolidine in the presence of an olefin with the application of energy. The resulting metal compound has two carbene ligands, one from the original carbene, the other from the imidazolidine. The imidazolidine has bulky protecting groups in the two positions adjacent to the carbene carbon. The method of making the imidazoline from the salt in the presence of a base and chloroform is also disclosed.

L'invention concerne un procédé de fabrication d'un catalyseur de carbène de ruthénium ou d'osmium, présentant un ligand de carbène d'imidazolidine, consistant à mettre en contact un carbène de ruthénium ou un carbène d'osmium et une imidazolidine, en présence d'une oléfine, avec une application d'énergie. Le composé métallique résultant possède deux ligands de carbène, l'un provenant du carbène original, l'autre provenant de l'imidazolidine. L'imidazolidine présente des groupes de protection volumineux au niveau des deux positions adjacentes au carbone de carbène. L'invention concerne également le procédé de fabrication de l'imidazolidine à partir du sel, en présence d'une base et de chloroforme.

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