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Ruthenium-Catalyzed Dimerization of Terminal Alkynes Initiated by a Neutral Vinylidene Complex

โœ Scribed by Slugovc, Christian; Mereiter, Kurt; Zobetz, Erich; Schmid, Roland; Kirchner, Karl

Book ID
117994909
Publisher
American Chemical Society
Year
1996
Tongue
English
Weight
145 KB
Volume
15
Category
Article
ISSN
0276-7333

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ChemInform Abstract: Ruthenium-Catalyzed
ChemInform Abstract: Ruthenium-Catalyzed Dimerization of Terminal Alkynes Initiated by a Neutral Vinylidene Complex.
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Ruthenium-Catalyzed Dimerization of Terminal Alkynes Initiated by a Neutral Vinylidene Complex. -The catalytic coupling of alkynes (III) or (VI) in the presence of Ru complexes such as (I) or (II) leads to butenynes with both conversion and selectivity strongly depending on the alkyne substituent.

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Regioselective enol ester formation results frcm the addition of saturated and unsaturated carboxylic acids to phenylacetylene in the presence of RuC13, RuClj/2PRj 01 R~C~~(PMe~)(arene~ catalysts. Mononuclear ruthenium complexes, such as RuC13 or RuClz(PR3)(arene), have been shown recently to be mor