Synthesis of new fluorescent amino acids with a triazolopyridine core: diacid sensorsElectronic supplementary information (ESI) available: NMR spectra. See DOI: 10.1039/c8nj02725k

A new family of amino acid containing pyridine-triazolopyridine cores has been prepared by means of a copper catalysed reaction. These compounds exhibit an intense emission that has been employed to sense the distance between two carboxylic acids in a linear molecule, from oxalic to glutaric acids. A new family of amino acid containing pyridine-triazolopyridine cores has been prepared by means of a copper catalysed reaction.