Patent · US Active

Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands; use as highly active, selective catalysts for olefin metathesis

US7294717B2 · kind B2 · utility

37Cited by

4References

32Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Wolfgang Anton Herrmann · Freising, DE
Wolfgang Schattenmann · Burghausen, DE
Thomas Weskamp · Munich, DE

Key dates

Filing date	Jul 29, 2003
Grant date	Nov 13, 2007
Priority date	—
Expiry date	Jul 26, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2531/24
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands and their use as highly active, selective catalysts for olefin metathesisThe invention relates to a complex of ruthenium of the structural formula I,where X1 and X2 are identical or different and are each an anionic ligand, 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′3 and R′4 are hydrogen or/and hydrocarbon groups.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.