Brønsted Acid‐Stibine Oxide Complexes as Organocatalysts for the Activation of Alkenes

Abstract

Various hydroxystibonium salts were synthesized via the one‐pot oxidation/salt formation of a series of triarylstibines. The properties of the ortho‐substituents on the aryl groups were elucidated via X‐ray crystallographic analysis and computational studies. Moreover, the catalytic reactivity of the hydroxystibonium salts with alkenes was investigated, and the involvement of a radical species is proposed based on the results of mechanistic studies.