Zero-valent transition metal complex and method for...

Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing

Reexamination Certificate

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C556S023000, C556S136000, C502S152000, C502S155000

Reexamination Certificate



The present invention relates to a zero-valent transition metal complex which can be used as a starting material for producing a catalyst usable for producing a polyolefin by ring-opening metathesis polymerization of an olefin and an epothilone by ring-closing metathesis reaction, and a method for efficiently producing, at low cost, an organometallic compound useful as a catalyst, using the zero-valent transition metal complex as a starting material. Provided is a method for producing a zero-valent transition metal complex (C), which comprises reacting a divalent transition metal complex (A) with an olefin (B), the complex (A) being selected from the group consisting of a divalent ruthenium complex (A1) and a divalent osmium complex (A2), thereby obtaining a zero-valent transition metal complex (C), wherein the reaction is conducted under reducing conditions and after the reaction, the resultant crude product is extracted at high temperature using a saturated hydrocarbon as an extracting solvent. Also provided is a method for producing an organometallic compound, which comprises reacting the metal complex (C) with a specific compound (D) and a neutral ligand (E) in one step.

patent: 5710298 (1998-01-01), Grubbs et al.
patent: 5831108 (1998-11-01), Grubbs et al.
patent: 5917071 (1999-06-01), Grubbs et al.
patent: 6407190 (2002-06-01), Van Der Schaaf et al.
patent: 2 114 149 (1983-08-01), None
patent: 11-262667 (1999-09-01), None
patent: 11-510807 (1999-09-01), None
patent: 2002-506452 (2002-02-01), None
patent: 2003-286295 (2003-10-01), None
patent: 96/04289 (1996-02-01), None
patent: 97/06185 (1997-02-01), None
patent: 99/00396 (1999-01-01), None
P. Pertici, et al.; “A New Synthetic Method for the Preparation of Cyclo-olefin Ruthenium Complexes;”Journal of the Chemical Society, Dalton Transitions: Inorganic Chemistry; No. 10; 1980; pp. 1961-1964.
Supplementary European Search Report dated Oct. 7, 2007 for PCT/JP2004/001589.


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