Iron(II)-Catalyzed Aerobic Biomimetic Oxidation of N-Heterocycles.
Srimanta MannaWei-Jun KongJan E BäckvallPublished in: Chemistry (Weinheim an der Bergstrasse, Germany) (2021)
Herein, an iron(II)-catalyzed biomimetic oxidation of N-heterocycles under aerobic conditions is described. The dehydrogenation process, involving several electron-transfer steps, is inspired by oxidations occurring in the respiratory chain. An environmentally friendly and inexpensive iron catalyst together with a hydroquinone/cobalt Schiff base hybrid catalyst as electron-transfer mediator were used for the substrate-selective dehydrogenation reaction of various N-heterocycles. The method shows a broad substrate scope and delivers important heterocycles in good-to-excellent yields.