作者:Lin Zhang、Zhenhua Liu、Huiqin Li、Guichun Fang、Badru-Deen Barry、Tuemay Abadi Belay、Xihe Bi、Qun Liu
DOI:10.1021/ol2028288
日期:2011.12.16
A novel copper-mediated chelation-assisted ortho C–H nitration of (hetero)arenes has been developed for the first time, which used dioxygen as terminal oxidant and 1,2,3-TCP as solvent, leading to the synthesis of nitroaromatics with excellent regioselectivity and in good yields. Mechanistic investigations indicate a mechanism involving a four-centered transition state, with simultaneous cleavage of
首次开发了一种新型的铜介导的(杂)芳烃螯合辅助邻硝基甲烷硝化反应,该反应使用双氧作为末端氧化剂,并使用1,2,3-TCP作为溶剂,导致硝基芳烃的合成极好的区域选择性和高收率。机理研究表明,该机理涉及一个四中心过渡态,同时裂解了2-芳基吡啶配位的铜(II)络合物上的硝酸根阴离子的邻位CH键和N-O键。