Synthesis of 6-aroyl phenanthridines by Fe-catalyzed oxidative radical cyclization of 2-isocyanobiphenyls with benzylic alcohols
作者:Ziyi Nie、Qiuping Ding、Yiyuan Peng
DOI:10.1016/j.tet.2016.11.010
日期:2016.12
A practical method for the synthesis of 6-aroyl phenanthridine derivatives by Fe-catalyzed oxidative radicalcyclization of 2-isocyanobiphenyls with benzylic alcohols is described. In addition, this cyclization could be occurred by using toluene as aroyl source. The procedure tolerates various functional groups under simple conditions. A single-electron-transfer pathway is proposed according to mechanistic
Direct Photoexcitation of Benzothiazolines: Acyl Radical Generation and Application to Access Heterocycles
作者:Xiang-Kui He、Juan Lu、Hai-Bing Ye、Lei Li、Jun Xuan
DOI:10.3390/molecules26226843
日期:——
An acyl radical generation and functionalization strategy through direct photoexcitation of benzothiazolines has been developed. The formed acyl radical species can either be trapped by quinoxalin-2-ones to realize their C(3)-H functionalization or trigger a cascade radical cyclization with isonitriles to synthesise biologically important phenanthridines. The synthetic value of this protocol can be