A reusable FeCl3·6H2O/cationic 2,2′-bipyridyl catalytic system for the coupling of aryl iodides with thiols in water under aerobic conditions

Abstract

In this study, an FeCl₃·6H₂O/cationic 2,2′-bipyridyl system was employed as a catalyst in the coupling of aryl iodides with thiols to form an aryl–sulfur bond in refluxed water under aerobic conditions. The residual aqueous solution after extraction could be reused for several cycles without a significant decrease in activity.