Cobalt-catalyzed redox-neutral synthesis of isoquinolines: C–H activation assisted by an oxidizing N–S bond
作者:Fen Wang、Qiang Wang、Ming Bao、Xingwei Li
DOI:10.1016/s1872-2067(16)62491-9
日期:2016.8
A redox-neutral avenue to access isoquinolines has been realized by a Co(Ⅲ)-catalyzed C-H activation process. Starting from readily available N -sulfinyl imine substrates and alkynes, the reaction occurred via N-S cleavage with broad substrate scope and functional group compatibility in the presence of cost-effective cobalt catalysts.
and stereoselective synthesis of C-sulfonylated aziridines is developed by using a one-step aza-Darzens reaction. When sodium bis(trimethylsilyl)amide (NaHMDS) was used as the base, bromomethyl phenylsulfone reacted with N-tert-butanesulfinyl imines to afford the 2-sulfonylated aziridine products in very good yields and with stereoselectivities up to 50 : 1.