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  • Title: Nickel-catalyzed highly regio- and stereoselective cross-trimerization between triisopropylsilylacetylene and internal alkynes leading to 1,3-diene-5-ynes.
    Author: Ogata K, Murayama H, Sugasawa J, Suzuki N, Fukuzawa S.
    Journal: J Am Chem Soc; 2009 Mar 11; 131(9):3176-7. PubMed ID: 19226123.
    Abstract:
    The first highly selective 1:2 cross-trimerization between triisopropylsilylacetylene and 2 equiv of internal alkynes, leading to 1,3-diene-5-yne compounds, was achieved using the Ni(cod)(2)/P(n)Pr(3) catalyst. Various symmetrical and asymmetrical internal alkynes could be used for the cross-trimerization reaction with high regio- and stereoselectivity.
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