Method of producing ruthenium complexes

C - Chemistry – Metallurgy – 07 – F

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C07F 15/00 (2006.01)

Patent

CA 2352377

The invention relates to a method of producing ruthenium complexes of general formula (I): RuX2(=CH-CH2R)L1L2, wherein X is an anionic ligand, R is hydrogen or an optionally substituted C1-20 alkyl radical or C6-20 aryl radical, and L1 and L2 independently are neutral electron-donor ligands. Said ruthenium complexes are produced by a) reacting RuX3 with a diene in a solvent on the basis of one or several aliphatic secondary alcohols in the presence of a reducing adjuvant, reacting said mixture with L1 and L2 in the presence of at least one coordinating weak base and hydrogen and without isolating any intermediates, b) reacting the mixture with compounds of general formula (II): R-C~CH, wherein R has the meaning indicated above, in the presence of a soluble chloride source.

L'invention concerne des complexes de ruthénium de la formule générale (I) RuX¿2?(=CH-CH¿2?R)L?1¿L?2¿ dans laquelle X désigne un ligand anionique, R désigne hydrogène ou un reste alkyle C¿1?-C¿20? ou un reste aryle C¿6?-C¿20? éventuellement substitué, et L?1¿ et L?2¿ désignent indépendamment l'un de l'autre des ligands donneurs d'électrons. Ces complexes sont obtenus par a) réaction de RuX¿3? avec un diène dans un solvant à base d'un ou de plusieurs alcools secondaires aliphatiques en présence ou en l'absence d'un auxiliaire de réduction, puis avec L?1¿ et L?2¿ en présence d'au moins une base faible et d'hydrogène et sans isoler les étapes intermédiaires ; b) réaction subséquente avec des composés de la formule générale (II) R-C~CH dans laquelle R a la signification mentionnée ci-dessus, en présence d'une source de chlorure soluble.

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