Peroxo-containing metal complexes having amine oxide, phosphine oxide, arsine oxide, pyridine N-oxide or pyridine ligands as epoxidation catalysts

摘要

Olefins can be epoxidized using catalysts I ##STR1## where M is a metal of the 4th to 7th transition group of the Periodic Table of the Elements,PPL.sup.1 is an amine oxide, phosphine oxide, arsine oxide, pyridine N-oxide or pyridine ligand of the formula II, III, VII or VIII, PPL.sup.2 is a customary auxiliary ligand or a further ligand L.sup. 1 or a free coordination site,P PX is oxo oxygen or an imido ligand, PPm is 1 or 2, and PPn is 1, 2 or 3.