Efficient multicomponent processes for synthesis of novel poly-nuclear hetero aryl substituted terpyridine scaffolds: Single crystal XRD study

Abstract

We studied the synthesis of novel terpyridine scaffolds from poly-nuclear and hetero-aryl aldehydes by the multicomponent condensation reactions with various acetyl pyridine derivatives in the presence of ammonium hydroxide. We have synthesised highly substituted pyridine scaffolds by different poly-nuclear and heterocyclic molecules that are not easily accessed by conventional methods. Comparative studies of two different processes catalysed by potassium hydroxide and pyrrolidine have been performed and presented in this report. The structures of all the newly prepared terpyridine molecules have been well established by preforming various spectral analysis and single crystal XRD studies for selected molecules. This approach addressed some structural miscellany concerns currently facing in photo-luminescent chemistry, and the derived hybrid pyridines could be used as suitable precursors for the synthesis of related photo-luminescent systems. The prepared scaffolds as such and their d-block or f-block metal complexes and coordination polymers may provide an efficient candidate for photo-luminescent chemistry.