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Moreover, aminosulfoximines were applied in the Cu-mediated vinylogous Mukaiyama-aldol reaction between pyruvate esters and dienol silanes, affording alpha,beta-unsaturated delta-hydroxy diesters in good yield with enantioselectivities of up to 99% ee.","abstract_html":"In this dissertation, the preparation of new C1- and C2-symmetric sulfoximines (N,N- and P,N-ligands) for enantioselective metal catalysis is described. Guided by the excellent level of enantioselectivity observed using aminosulfoximine in the Cu-catalyzed Mukaiyama-aldol reaction, modifications of this class of potential ligand by substitution of the aryl bridge was effected. Gratifyingly, a methyl-substituted aminosulfoximine proved to be the best ligand of our screening in the Cu-catalyzed carbonyl-ene reaction between pyruvate esters and olefins. 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