A series of chiral macrocyclic Mn (III) Salen complexes has been prepared with two salicylidene moieties linked in their 3 and 3′ positions by aliphatic polyether bridges of variable lengths or by a more rigid aromatic junction arm. X-ray structures of ligand precursors and of complex 8 have been performed. All complexes have been used in the asymmetric epoxidation of 1, 2-dihydronaphthalene with NaOCl as oxygen atom donor ...
