Oxygen as an oxidant in rhodium(III) catalyzed oxidative C–H/C–H cross-coupling between indoles and oxazoles
作者:Yan Wang、Jingbo Lan
DOI:10.1007/s11426-017-9053-7
日期:2018.2
Rh(III)-catalyzed oxidative C–H/C–H cross-coupling between indoles and oxazoles with molecular oxygen as an oxidant has been developed to construct a variety of 2-(indol-2-yl)oxazoles. The chelation-assisted strategy endows this catalytic system with an excellent C2-site selectivity by introducing a pyrimidyl directing group. In addition, polycyclic pyridinium salts are also obtained via Rh(III)-catalyzed