Copper-Catalyzed Synthesis of Dibenzo[b,f]imidazo[1,2-d][1,4]oxazepine Derivatives via a Double Ullmann Coupling Reaction
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DOI: 10.1055/s-0037-1611945
Abstract: A double Ullmann coupling reaction successfully takes place between 4,5-diaryl-2-(2-bromophenyl)-1H-imidazoles and 2-bromophenols in the presence of Cs2CO3. This procedure is catalyzed by copper(I) iodide and o-phenanthroline and provides an efficient method for the synthesis of… read more here.
Keywords: coupling reaction; double ullmann; synthesis dibenzo; ullmann coupling ... See more keywords