The mechanism of metal-promoted alkyne cyclo-oligomerisation with isocyanides leading to cyclopentadiene derivatives. the crystal and molecular structure of [WSPri(CNBut){η2-C 4(CF3)4CNBut}(η5-C 5H5)] containing an ...

Jack L. Davidson, W. F. Wilson, K. W. Muir

Research output: Contribution to journalArticle

Abstract

full title:The mechanism of metal-promoted alkyne cyclo-oligomerisation with isocyanides leading to cyclopentadiene derivatives. the crystal and molecular structure of [WSPri(CNBut){?2-C 4(CF3)4CNBut}(?5-C 5H5)] containing an ?2-tetrakis-(trifluoromethyl)cyclopentadienimine ligand Reaction of t-butyl isocyanide with the two co-ordinated alkynes in [MSR'(CF3C=CCF3)2(? 5-C5H5)] (M = Mo, R' = C 6F5; M = W, R' = p-tolyl) has been shown to involve initial attack at the alkyne followed by transfer of CNBut to the metal with concomitant oxidative metallocyclisation and subsequent reductive cyclisation to give [MSR'(CNBut){?2-C 4(CF3)4CNBut}(?5- C5H5)] shown by X-ray diffraction studies (M = W, R' = Pri) to contain a tetrakis(trifluoromethyl)cyclopentadienimine ligand attached only via the C-N bond to the metal.

Original languageEnglish
Pages (from-to)460-462
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number8
Publication statusPublished - 1985

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