Asymmetric oxidation of sulfides was examined by using (salen) mangane
se(III) complexes as catalysts and (8S,8'S,1''S,2''S)complex (3b) was
found to show high asymmetric induction up to 90% ee. To be interested
, however, (8R,8'R,1''S,2''S)complex (1a) that showed excellent asymme
tric induction in the epoxidation of simple olefins was a poor catalys
t for the oxidation of sulfides.