Abstract
An efficient homocoupling of 2-halotropones, to afford 2,2′-bitropones, occurs in toluene at rt in the presence of stoichiometric amounts of [Ni(cod)2] and tris(1-pyrazolyl)methane ligand, in a 1:1 molar ratio. This methodology was extended to aryl halides.
ACKNOWLEDGMENT
T. F. thanks Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR), Programmi di Ricerca Scientifica di Notevole Interesse Nazionale 2004–2005, for financial support.
Notes
a From HPLC analysis.
a Isolated yield.
b From HPLC analysis.