Aminyl radicals of the type•NR₂,featuring a nitrogen-centered unpaired electron,are highly reactive intermediates that are notoriously difficult to isolate in the condensed phase.Herein,we report the synthesis of thio...Aminyl radicals of the type•NR₂,featuring a nitrogen-centered unpaired electron,are highly reactive intermediates that are notoriously difficult to isolate in the condensed phase.Herein,we report the synthesis of thio-,seleno-and telluro-aminyl radicals 2-4,obtained in one step from reactions of an isolable triplet nitrene with diphenyldichalcogenides.Radicals 3 and 4 represent the first stable examples of seleno-and telluro-substituted aminyl radicals.Compounds 2-4 were characterized by single-crystal X-ray diffraction,electron paramagnetic resonance and UV/Vis absorption spectroscopy.This work not only expands the family of isolable nitrogen-centered radicals,but also opens new avenues for main-group radical chemistry involving heavier p-block elements.展开更多
基金supported by the National Natural Science Foundation of China(grant nos.22322112 and 22488101)Guangdong Basic and Applied Basic Research Foundation(grant no.SL2024A04J01805).
文摘Aminyl radicals of the type•NR₂,featuring a nitrogen-centered unpaired electron,are highly reactive intermediates that are notoriously difficult to isolate in the condensed phase.Herein,we report the synthesis of thio-,seleno-and telluro-aminyl radicals 2-4,obtained in one step from reactions of an isolable triplet nitrene with diphenyldichalcogenides.Radicals 3 and 4 represent the first stable examples of seleno-and telluro-substituted aminyl radicals.Compounds 2-4 were characterized by single-crystal X-ray diffraction,electron paramagnetic resonance and UV/Vis absorption spectroscopy.This work not only expands the family of isolable nitrogen-centered radicals,but also opens new avenues for main-group radical chemistry involving heavier p-block elements.
