A pyridine- N-oxide catenane for cation recognition

Org Biomol Chem. 2024 Apr 17;22(15):3001-3008. doi: 10.1039/d4ob00176a.

Abstract

The rapid preparation of a pyridine-N-oxide containing [2]catenane is described. The [2]catenane was characterized by NMR spectroscopy, mass spectrometry and X-ray single crystal structure determination. 1H NMR titration experiments reveal the [2]catenane may be reversibly protonated, as well as an ability to bind lithium cations more strongly than sodium cations.