The mechanistic role of η2-vinyl complexes in metal-promoted alkyne Oligomerisations. The crystal and molecular structures of [W{η5-C(CF3)=...

Laurence Carlton, Jack L. Davidson, Paul Ewing, Ljubica Manojlović-Muir, Kenneth W. Muir

Research output: Contribution to journalArticle

Abstract

full title: The mechanistic role of ?2-vinyl complexes in metal-promoted alkyne Oligomerisations. The crystal and molecular structures of [W{?5-C(CF3)= C(CF3)C(CO 2Me)=C(CO2Me)C(CF3)=C(CF3)SPri }(?5-C5H5)], [WF{?5-C(=CF2)C(CF3)= C(CO2Me)C(CO2Me)C(CF3)C(CF3) SPri}(?5-C5H5)], and [W{?4-C(CF3)C(CF3)= C(Me)C(Me)SPr i}(?2-CF3C=CCF3)(?-C 5H5)] Reactions of alkynes RC=CR (R = CF3, CO2Me, or Me) with ?2-vinyl complexes [W{?2-C(CF3)C(CF3)SR'}(CF 3C=CCF 3)-(?5-C5H5)] (R' = Et, Prn, or Pri) give isomeric products [W(CF3C2CF3)2(RC2 R)SR'(?5-C5H5)] resulting from insertion of the incoming alkyne into the M=C bond of the ?2- vinyl and thus illustrate that ?2-vinyls can act as intermediates in metal-promoted alkyne oligomerisation reactions.

Original languageEnglish
Pages (from-to)1474-1476
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number21
Publication statusPublished - 1985

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