Process for the preparation of ruthenium compounds

摘要

We describe a process for the preparation of a ruthenium compound of formula ÄRu(dienyl)2Ü wherein "dienyl" represents a substituted pentadienyl or cycloheptadienyl group, which process comprises reacting dichloro(2,7-dimethylocta-2,6-dien-1,8-diyl)-ruthenium with an appropriate diene in the presence of: 1) a primary or secondary alcohol capable of reducing Ru(IV) to Ru(II) ; and 2) a carbonate of an alkaline metal. The title compounds are useful as precursors of Ru catalysts.