Synthesis and Characterization of New Chiral Schiff Base Complexes with Diiminobinaphthyl or Diiminocyclohexyl Moieties as Potential Enantioselective Epoxidation Catalysts.

摘要: New chiral Schiff base complexes have been obtained by condensation of 2,2‘-diamino-1,1‘-binaphthalene or 1,2-diaminocyclohexane and various salicylaldehydes subsequent metalation with manganese, iron, cobalt, nickel, copper, zinc. The complete 1H 13C NMR characterization the ligands is reported, as are X-ray crystal structures (1R,2R)-(−)-N,N‘-bis[3-(N,N-dimethylamino)salicylidene]-trans-1,2-cyclohexanediimine [(1R,2R)-(−)-N,N‘-bis(salicylidene)-trans-1,2-cyclohexanediiminato]copper(II). new manganese evaluated in oxygenation prochiral olefins sulfides using sodium hypochlorite, hydrogen peroxide, N-methylmorpholine N-oxide/m-chloroperbenzoic acid oxidant.