A catalytic amount of triarylaminium salt is demonstrated to be an efficient initiator for oxidative Mannich reaction of tertiary amines and nonactivated ketones under mild neutral conditions. Air is essential for this reaction and acts as a terminal oxidant. Metal catalysts, acid or base additives, and stoichiometric amounts of chemical oxidants are all avoided in this methodology. Six examples of
A novel stable radical cation triarylaminiumsalt able to induce aerobic oxidative α-C–H functionalization of tertiary amines in catalytic amounts has been developed. The reaction is performed in the absence of any other additives under mild conditions and only requires atmosphere air as a sustainable co-oxidant.
Iron-catalyzed aerobic oxidative phosphonation of <i>N</i>-aryl tetrahydroisoquinolines
作者:Junjie Cai、Yingle Liu、Yan Jiang、Yi Yang
DOI:10.1080/10426507.2017.1330827
日期:2017.9.2
GRAPHICAL ABSTRACT ABSTRACT We report herein a novel and efficient method for iron-catalyzed aerobic oxidative phosphonation of N-aryl tetrahydroisoquinolines for the synthesis of biologically interesting α-aminophosphonates. This new C–Pbondformation reaction features the employment of a sustainable and cost-effective iron salt [Fe(NO3)3·9H2O] as catalyst, the utilization of air as environmental-benign