Synthesis, Spectral, and Single Crystal XRD Studies of Novel Terpyridine Derivatives of Benzofuran-2-carbaldehyde and their Cu(II) Complex

A series of novel terpyridine derivatives of benzofuran (NP1–NP3) were synthesised by simple multicomponent one pot reaction among benzofuran-2-carbaldehyde, ammonium hydroxide and three different derivatives of acetyl pyridine with isolated yield up to 98%. All the synthesised molecules were characterised by NMR, HRMS, IR spectroscopies and single crystal XRD (CIF file CCDC no. 2078532 for TP1). Cu(II) complexes were prepared selectively with terpyridine derivative of 2-acetyl pyridine and characterised by single crystal XRD (CIF file CCDC no. 1525025 for TP-Cu). UV−Vis spectral studies were performed with all the prepared molecules.