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Synthesis and Single-Crystal X-ray Characterization of 4,4‘ ‘-Functionalized 4‘-(4-Bromophenyl)-2,2‘:6‘,2‘ ‘-terpyridines

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posted on 03.02.2006, 00:00 by Ibrahim Eryazici, Charles N. Moorefield, Semih Durmus, George R. Newkome
To expand the utility of bis(terpyridine) metal connectivity, the selective symmetrical and unsymmetrical 4,4‘ ‘-functionalization (−CN, −Me, −CO2Me) of 4‘-(4-bromophenyl)-2,2‘:6‘,2‘ ‘-terpyridines was achieved using the Kröhnke synthesis. The final substituted 2,2‘:6‘,2‘ ‘-terpyridines along with their corresponding intermediates, 4ac, were recrystallized and characterized by 1H NMR and 13C NMR as well as X-ray crystallography; COSY correlations were also conducted to permit definitive proton assignment.

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