Hydrogen-Borrowing Reduction/Dehydrogenative Aromatization of Nitroarenes through Visible-Light-Induced Energy Transfer: An Entry to Pyrimidoindazoles and Carbazoles
作者:Zhonghua Qu、Xiaochen Ji、Shi Tang、Guo-Jun Deng、Huawen Huang
DOI:10.1021/acs.orglett.2c02894
日期:2022.10.7
reduction/dehydrogenation aromatization/cyclization of nitroarenes by energy transfer. The present protocol does not require additional oxidants, hydrogen acceptors, and hydrogen evolution metal catalysts. The mechanistic studies demonstrated that the hydrogen-borrowing reduction/dehydrogenative aromatization process was initiated by the formation of active singlet species through efficient energy transfer
在这里,我们描述了一种新的可见光诱导方案,用于通过能量转移对硝基芳烃进行借氢还原/脱氢芳构化/环化。本协议不需要额外的氧化剂、氢受体和析氢金属催化剂。机理研究表明,借氢还原/脱氢芳构化过程是通过激发的Ir[dF(CF 3 )ppy] 2 (dtbpy)PF 6向硝基芳烃的有效能量转移形成活性单线态物质而引发的。