Orientation Nitration of C—H Bond Using Azo Group as a Removable Directing Group: Regiospecific Synthesis of o-Phenylenediamines
Zhang Jian, Zhang Wei, Ren Shaobo, Cui Jianhai, Liu Yunkui
Chin. J. Org. Chem. . 2015, (3): 647 -654 .  DOI: 10.6023/cjoc201410042