Direct photolysis of N-methoxypyridiniums for the pyridylation of carbon/heteroatom-hydrogen bonds  

作　　者：He Sheng Bei-Bei Zhang Qiang Liu Zhu-Sheng Yang Zhi-Xiang Wang Xiang-Yu Chen 

机构地区：[1]School of Materials and Architectural Engineering,Guizhou Normal University,Guiyang,550025,China [2]School of Chemical Sciences,University of the Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Science China Chemistry》2022年第12期2494-2499,共6页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(E2240303,22001248);the Fundamental Research Funds for the Central Universities and the University of the Chinese Academy of Sciences.

摘　　要：Current synthetic methods for the functionalization of pyridinium salts usually rely on transition metals,oxidants and/or photocatalysts.To date,no direct photolysis method exists under photocatalyst-,transition metal-and oxidant-free conditions.We herein demonstrate the first direct photolysis of N-methoxypyridinium salts for the selective assembly of various pyridines by using a series of common feedstocks,including amine-boranes,unactivated alkanes,phosphine oxides,amides,silanes and aldehydes.

关 键 词：PHOTOLYSIS N-methoxypyridiniums hydrogen atom transfer PYRIDINES 

分 类 号：O621.25[理学—有机化学]