N. Hosoya et al., ASYMMETRIC EPOXIDATION WITH OPTICALLY-ACTIVE (SALEN)MANGANESE(III) COMPLEXES - FROM WHICH DIRECTION DOES THE OLEFIN APPROACH THE METAL-OXO BOND, Synlett, (9), 1993, pp. 641-645
Asymmetric epoxidation of trans-stilbene, cis-beta-methylstyrene, dihy
dronaphthalene, and 6-acetamido-2,2-dimethyl-7-nitrochromene was exami
ned with various optically active (salen)manganese(III) complexes as c
atalysts. From the results, it was strongly suggested that cis-olefin
approaches metal-oxo bond along nitrogen-metal bond axis.