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Issue 43, 2016
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Mechanistic understanding of alkyne cyclotrimerization on mononuclear and dinuclear scaffolds: [4 + 2] cycloaddition of the third alkyne onto metallacyclopentadienes and dimetallacyclopentadienes

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Abstract

Cyclotrimerization of alkynes catalyzed by transition metal complexes is a straightforward synthetic method for constructing a benzene skeleton in organic synthesis. Not only mononuclear complexes, but also multinuclear complexes act as catalysts for alkyne cyclotrimerization, and their reaction mechanisms have been intensively investigated toward developing highly efficient and regio- and chemo-selective catalysts. In this review, we summarize stoichiometric and catalytic alkyne coupling reactions on mononuclear and dinuclear scaffolds in relation to the reaction mechanism of alkyne cyclotrimerization, including our recent mechanistic approaches using dinuclear tantalum motifs.

Graphical abstract: Mechanistic understanding of alkyne cyclotrimerization on mononuclear and dinuclear scaffolds: [4 + 2] cycloaddition of the third alkyne onto metallacyclopentadienes and dimetallacyclopentadienes

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Publication details

The article was received on 30 Aug 2016, accepted on 03 Oct 2016 and first published on 04 Oct 2016


Article type: Perspective
DOI: 10.1039/C6DT03389J
Citation: Dalton Trans., 2016,45, 17072-17081
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    Mechanistic understanding of alkyne cyclotrimerization on mononuclear and dinuclear scaffolds: [4 + 2] cycloaddition of the third alkyne onto metallacyclopentadienes and dimetallacyclopentadienes

    K. Yamamoto, H. Nagae, H. Tsurugi and K. Mashima, Dalton Trans., 2016, 45, 17072
    DOI: 10.1039/C6DT03389J

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