Meta-Selective C<sub>Ar</sub>–H Nitration of Arenes through a Ru<sub>3</sub>(CO)<sub>12</sub>-Catalyzed Ortho-Metalation Strategy
作者:Zhoulong Fan、Jiabin Ni、Ao Zhang
DOI:10.1021/jacs.6b03402
日期:2016.7.13
as the catalyst and Cu(NO3)2·3H2O as the nitro source, a wide spectrum of arenes bearing diversified N-heterocycles or oximido as the directing groups were nitrated with meta-selectivity exclusively. Mechanism studies have demonstrated the formation of a new 18e-octahedral ruthenium species as a key ortho-CAr-H metalated intermediate, which may be responsible for the subsequent meta-selective electrophilic