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 language | English |
|---|---|
| Pages (from-to) | 460-462 |
| Number of pages | 3 |
| Journal | Journal of the Chemical Society, Chemical Communications |
| Issue number | 8 |
| Publication status | Published - 1985 |