Cu-catalyzed synthesis of symmetric group 6 (Fischer) bis-carbene complexes.
The efficient copper oxidative homocoupling (CuCl/TMEDA/O2) of alkynyl Fischer carbene complexes yields bis-carbene complexes having pi-tethers. The bimetallic complexes are exceptional templates to prepare diverse organic symmetric structures connected by pi-extended fragments.
López-Alberca
María P
MP
Departamento de Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain.
Mancheño
María J
MJ
Fernández
Israel
I
Gómez-Gallego
Mar
M
Sierra
Miguel A
MA