A C-S cross-coupling observed in situ reaction of 2-mercaptobenzothiazole with CuI

Complexes 1 and 2 were synthesized by the reaction of copper(I) iodide and 2-mercaptobenzothiazole ligand in one-pot. Meanwhile, an unexpected C-S cross-coupling ligand reaction in situ was observed firstly. And a hypothesis reaction mechanism was proposed.