Copper‐Catalyzed Aerobic Benzylic C(<i>sp</i><sup>3</sup>)−H Oxidation of Unprotected Aniline Derivatives for the Synthesis of Phenanthridines
作者:Kanako Nozawa‐Kumada、Yuta Matsuzawa、Masahito Hayashi、Takumi Kobayashi、Masanori Shigeno、Akira Yada、Yoshinori Kondo
DOI:10.1002/adsc.202400059
日期:——
Herein, we report a copper‐catalyzed intramolecular benzylic C(sp3)−H oxidation of unprotected aniline derivatives under aerobic conditions, which enables the preparation of phenanthridine compounds. To the best of our knowledge, this is the pioneering reaction of dehydrogenative C(sp3)−N bond formation from unprotected anilines under a Cu/O2 system. Notably, various anilines possessing alkyl, methoxy
在此,我们报道了在有氧条件下铜催化未保护的苯胺衍生物的分子内苄基C(sp3)−H氧化,从而能够制备菲啶化合物。据我们所知,这是在 Cu/O2 体系下由未保护的苯胺形成脱氢 C(sp3)−N 键的开创性反应。值得注意的是,具有烷基、甲氧基、卤素(氟、氯、溴和碘)、三氟甲基、三氟甲氧基、氰基、酯和缩醛基团的各种苯胺也可以参与该反应。