Direct Proof for OMn^v (salen) Complexes

Abstract

Electrospray mass spectroscopy has finally provided proof for the formation of oxomanganese(v) complexes such as 1 under the conditions of the Kochi-Jacobson-Katsuki epoxidation. Collision of 1 with olefins or sulfides in the gas phase regenerates the initial (salen)MNIII complexes by transfer of the oxygen atom.