New Fischer carbene complexes of rhodium(i): preparation and 2-cyclopentenone ring synthesis by annelation to alkynes.
A new type of metal carbene complexes of group 9, specifically a cationic Fischer carbene of rhodium(I), has been synthesized from chromium carbene complexes via double transfer of carbene and CO ligands. These complexes reveal a different reactivity than other transition metal carbenes, including their chromium precursors, toward neutral and electron-poor alkynes, giving selectively polysubstituted cyclopentenones.
Barluenga
José
J
Instituto Universitario de Química Organometálica Enrique Moles-Unidad Asociada al C.S.I.C., Universidad de Oviedo, Julián Claveria, 8, 33006 Oviedo, Spain. barluenga@sauron.quimica.uniovi.es
Vicente
Rubén
R
López
Luis A
LA
Rubio
Eduardo
E
Tomás
Miguel
M
Alvarez-Rúa
Carmen
C