Alkylidene complexes of ruthenium containing N-heterocyclic...

Details Alkylidene complexes of ruthenium containing N-heterocyclic... Alkylidene complexes of ruthenium containing N-heterocyclic...

2007-07-26

2008-05-27

Nazario-Gonzalez, Porfirio (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S262200, C556S022000, C556S136000, C526S171000, C502S155000

Reexamination Certificate

active

07378528

ABSTRACT:
The invention relates to a complex of ruthenium of the structural formula I,where X1and X2are identical or different and are each an anionic ligand,R1and R2are identical or different and can also contain a ring, and R1and R2are each hydrogen or/and a hydrocarbon group,the ligand L1is an N-heterocyclic carbene and the ligand L2is an uncharged electron donor, in particular an N-heterocyclic carbene or an amine, imine, phosphine, phosphate, stibine, arsine, carbonyl compound, carboxyl compound, nitrile, alcohol, ether, thiol or thioether,where R1, R2, R3and R4are hydrogen or/and hydrocarbon groups.The invention further relates to a process for preparing acyclic olefins having two or more carbon atoms or/and cyclic olefins having four or more carbon atoms from acyclic olefins having two or more carbon atoms or/and from cyclic olefins having four or more carbon atoms by an olefin metathesis reaction in the presence of at least one catalyst, wherein a complex is used as catalyst and R′1, R′2, R′3and R′4are hydrogen or/and hydrocarbon groups.

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