Palladium-mediated borylation of pentafluorosulfanyl functionalized compounds: the crucial role of metal fluorido complexes

Abstract

Stoichiometric reactions of SF₅ functionalized bromo or iodo aromatics at [Pd(PiPr₃)₂] (1) led to the oxidative addition products 3, 5 and 7. They were converted into their corresponding palladium fluorido complexes, which reacted readily with bis(pinacolato)diboron (B₂pin₂) to give the borylated SF₅ aromatic compounds. Based on these studies a catalytic borylation of SF₅ organyls was developed.