Synthesis and structure of a new dithiazolopyridine as a novel fluorescent sensor of cyanide ion

Recently, we reported the synthesis and characterization of the dithiazolopyridine 1 and studied its optical properties upon coordination to Cu2+ to give complex 1Cu2+ [1]. We found that 1Cu2+ displays high sensitivity, well reversibility and rapid response ( 1 min) for recognizing CN‒in THF. Herein, the synthesis and characterization of dithiazolopyridine2 is reported. In contrast to compound 1, probe 2 detected directly the cyanide ions without using of its metal complexes [Figure 1]. The practical application of the 2 for the detection of CN− ions was realized by using solution coated silica strips (TLC plates).