Denitrogenative Imidoyl Radical Cyclization: Synthesis of 2-Substituted Benzoimidazoles from 1-Azido-2-isocyanoarenes
作者:Dengke Li、Tingting Mao、Jinbo Huang、Qiang Zhu
DOI:10.1021/acs.orglett.7b01339
日期:2017.6.16
2-substituted benzoimidazoles, through unprecedented denitrogenative imidoyl radicalcyclization of 1-azido-2-isocyanoarenes, has been developed. This tandem radical process was initiated by adding a C- or P-centered radical to isocyanide, followed by cycloaddition of the imidoyl radical to the azido group. Then, nitrogen loss and hydrogen abstraction of the resulting aminyl radical from surroundings delivered