O-Isopropylferrocenesulfonate: Synthesis of Polysubstituted Derivatives and Electrochemical Study

Few studies have been reported on the synthesis of ferrocenesulfonates up to now. Here, we describe the use of ortho-deprotometalation and "halogen dance" reactions to easily reach original derivatives. Further functionalizations using cross-coupling and metal/halogen exchange were also performed from iodinated derivatives. Finally, while the electrochemical properties of selected ferrocenesulfonates were evaluated and compared with the corresponding sulfonamide derivatives, halogen bonds were observed at the solid state for iodinated derivatives of ferrocenesulfonates.