Levitskiy Oleg A, Grishin Yuri K, Magdesieva Tatiana V
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, 1/3, Moscow, 119234, Russia.
Beilstein J Org Chem. 2024 Aug 7;20:1906-1913. doi: 10.3762/bjoc.20.166. eCollection 2024.
A novel facile approach to -arylpyridoindazolium salts is proposed, based on direct oxidation of the -pyridine substituted diarylamines, either using bis(trifluoroacetoxy)iodobenzene as an oxidant, or electrochemically, via potentiostatic oxidation. Electrochemical synthesis occurs under mild conditions; no chemical reagents are required except electric current. Both approaches can be considered as a late-stage functionalization; easily available -pyridyl-substituted diarylamines are used as the precursors.
基于对吡啶取代二芳基胺的直接氧化,提出了一种制备芳基吡啶并吲唑鎓盐的新颖简便方法,可使用双(三氟乙酰氧基)碘苯作为氧化剂进行氧化,也可通过恒电位氧化进行电化学氧化。电化学合成在温和条件下进行;除电流外无需化学试剂。这两种方法都可视为后期功能化;易于获得的吡啶基取代二芳基胺用作前体。