PEROXO GROUP-CONTAINING METAL COMPLEXES WITH AMINE OXIDE, PHOSPHANE OXIDE, ARSANE OXIDE, PYRIDIN-N-OXIDE OR PYRIDINE LIGANDS AS EPOXIDATION CATALYSTS

摘要

Catalysts for epoxidizing olefins have the formula (I), in which M stands for a metal of the 4th to 7th secondary group of the periodic table of elements; L1 stands for an amine oxide, phosphane oxide, arsane oxide, pyridin-N-oxide or pyridine ligand having the formulas (II), (III), (VII) or (VIII); L2 stands for a usual auxiliary ligand or another ligand L1 or a free co-ordination site; X stands for oxo-oxygen or imido ligands; m equals 1 or 2; and n equals 1, 2 or 3.