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Ruthenium‐Mediated C−C Coupling Reactions of Alkynes − The Key Role of Ruthenacyclopentatriene Complexes
Author(s) -
Schmid Roland,
Kirchner Karl
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400219
Subject(s) - chemistry , ruthenium , cationic polymerization , electrophile , ligand (biochemistry) , acetonitrile , halide , medicinal chemistry , transition metal , coupling reaction , metal , stereochemistry , molecule , cyclooctadiene , catalysis , polymer chemistry , organic chemistry , receptor , biochemistry
This review describes the highlights of the reactions of the substitutionally labile neutral pseudo 14VE complexes RuCp′(COD)Cl (Cp′ = Cp, Cp*; COD = 1,5‐cyclooctadiene) and the cationic complexes [CpRu(CH 3 CN) 2 L] + and [Ru(η 5 ‐C 5 H 4 CH 2 CH 2 ‐κ 1 P ‐PPh 2 )] + with alkynes. The ligand L is a co‐ligand, whose nature turns out to be critical to the outcome of the reaction, and varies from halides to tertiary phosphanes, tertiary stibines, CO, and acetonitrile. Along these lines vast and diversified varieties of rearrangements within and between molecules ligated to the transition‐metal center has been discovered. A crucial role in all reactions reported is the intermediacy of electrophilic ruthenacyclopentatriene complexes, an entity featuring a biscarbene functionality. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)