Chemistry Letters, Vol.41, No.11, 1422-1424, 2012
C-C Coupling Promoted by a NiCl2/bpy/Mg System in DMF and Its Application to Dehalogenative Polycondensation
A mixture of NiCl2, 2,2'-bipyridine (bpy), and Mg in DMF promoted dehalogenative homocoupling of RX (e.g., bromobenzene and p-tolyl bromide) efficiently. This basic coupling reaction was applied for polycondensation of dihaloorganic compounds, X-R'-X, to give poly(9,9-dioctylfluorene-2,7-diyl), poly(9,10-dioctyl-9,10-dihydrophenanthrene-2,7-diyl), and poly(pyridine-2,5-diyl).