Goriya, Yogesh Kim, Hun Young Oh, Kyungsoo <i>o</i>‑Naphthoquinone-Catalyzed Aerobic Oxidation of Amines to (Ket)imines: A Modular Catalyst Approach A modular aerobic oxidation of amines to imines has been achieved using an <i>ortho</i>-naphtho­quinone (<i><b>o</b></i><b>-NQ</b>) catalyst. The cooperative catalyst system of <i><b>o</b></i><b>-NQ</b> and Cu­(OAc)<sub>2</sub> enabled the formation of homocoupled imines from benzylamines, while the presence of TFA helped the formation of cross-coupled imines in excellent yields. The current mild aerobic oxidation protocol could also be applied to the oxidation of secondary amines to imines or ketimines with the help of cocatalyst, Ag<sub>2</sub>CO<sub>3</sub>, with excellent yields. Modular Catalyst Approach;oxidation protocol;yield;NQ;amines;cross-coupled imines;formation;TFA;homocoupled imines;Ag 2 CO 3;catalyst system 2016-09-28
    https://acs.figshare.com/articles/journal_contribution/_i_o_i_Naphthoquinone-Catalyzed_Aerobic_Oxidation_of_Amines_to_Ket_imines_A_Modular_Catalyst_Approach/3914754
10.1021/acs.orglett.6b02697.s001