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The reaction of 2,6-dicarboxylic acid dichydrochloride in dry toluene with EtNH 2 in KOH affords the title compound (I). It is a model ligand to mimic the polymer repeat unit to establish the site of metal coordination to polymer support. The central part of the molecule constitutes of a pyridine ring with two side chains forming an inner cavity with two hydrogen amide atoms pointing towards...
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