Novel Manganese Complex as an Efficient Catalyst for the Isobutyraldehyde‐Mediated Epoxidation of Cyclic Alkenes with Dioxygen

This is the authors' abstract. We don't add key points for this paper.

The highly efficient oxidation of cyclic alkenes was realized using a novel manganese complex as catalyst and molecular oxygen as oxidant in the presence of isobutyraldehyde. The reaction of 2‐pyridinecarboxylic acid with p‐toluidine gave the corresponding amide in good yield. A manganese complex bearing this ligand was highly active in isobutyraldehyde‐mediated epoxidation of cyclic alkenes using molecular oxygen as oxidant, and up to and over 99.9% conversion of the substrate and 99% yield of the epoxide were obtained for the epoxidation of norbornylene.