Ruthenium complexes as (pre)catalysts for metathesis reactions

Details Ruthenium complexes as (pre)catalysts for metathesis reactions Ruthenium complexes as (pre)catalysts for metathesis reactions

2005-03-15

2005-03-15

Nazario-Gonzalez, Porfirio (Department: 1621)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S262200, C556S021000, C556S022000, C556S136000, C502S152000, C502S162000, C502S167000

Reexamination Certificate

active

06867303

ABSTRACT:
The invention relates to new (pre)catalysts of ruthenium complexes of formula 1,wherein L1, X, X′, R1, R2, R3and n are defined herein. The novel ruthenium complexes of formula 1 are convenient (pre)catalysts for metathesis reactions and can be applied, e.g., for ring-closing metathesis, cross metathesis or ene-ine metathesis reactions. Another aspect of the invention are the novel intermediates of formula 2.

REFERENCES:
patent: WO 0214376 (2002-02-01), None
Kalanderopoulos et al., J. Am. Chem. Soc., vol. 108, No. 20, pp. 6290-6265 (1986).*
S. Gessler, et al. “Synthesis and Metathesis Reactions of a Phosphine-free Dihydroimidazole Carbene Ruthenium Complex”, Tetra. Lett. 41 (2000) 9973-9976.
S. Garber, et al. “Efficient and Recyclable Monomeric and Dendritic Ru-Based Metathesis Catalysts”, J. Am. Chem. Soc. 2000, 122, 8168-8179.
H. Wakamatsu, et al. “Ein hochaktiver und luftstabiler Rutheniumkomplex für die Olefinmetathese”, Angew. Chem. 2002, 114 Nr. 5. 832-834.
H. Wakamatsu, et al. “A New Highly Efficient Ruthenium Metathesis Catalyst”, Angew. Chem. 2002, 114, Nr. 13, 2509-2511.

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