Molecules (Aug 2023)

Synthesis and Characterization of New Triazole-Bispidinone Scaffolds and Their Metal Complexes for Catalytic Applications

  • Arianna Rossetti,
  • Alessandro Sacchetti,
  • Fiorella Meneghetti,
  • Greta Colombo Dugoni,
  • Matteo Mori,
  • Carlo Castellano

DOI
https://doi.org/10.3390/molecules28176351
Journal volume & issue
Vol. 28, no. 17
p. 6351

Abstract

Read online

Bispidines are a family of ligands that plays a pivotal role in various areas of coordination chemistry, with applications in medicinal chemistry, molecular catalysis, coordination polymers synthesis, and molecular magnetism. In the present work, triazole moieties were introduced using the CuAAC click-reaction, with the aim of expanding the number of coordination sites on the bispidine core. The 1,2,3-triazole rings were thus synthesized on propargyl-derived bispidines after reaction with different alkyl azides. The new class of triazole-bispidines was characterized, and their chelation capabilities were evaluated with different metals through NMR titration, ESI-MS spectrometry, and single-crystal X-ray diffraction (SC-XRD). Finally, the suitability of these molecules as metal ligands for the catalytic Henry reaction was demonstrated with copper and zinc.

Keywords