Cobalt-mediated Reduction of C=N Bond. Synthesis of Methyl <i>N</i>-<i>p</i>-Toluenesulfonyl-1-phenylglycinate Catalyzed by Bis (dioximato)cobalt–Quinine Complexes

Abstract

Abstract Reduction of C=N bond mediated by cobalt complxes was facilitated by the electron withdrawing substituents on the substrate. Catalytic hydrogenation of methyl N-p-toluenesulfonyl-1-imino-1-phenylacetate in the presence of quininiun salt afforded the corresponding N-tosyl amino ester in good yields.