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Visible‐Light‐Induced, Catalyst‐Free Radical Arylations of Arenes and Heteroarenes with Aryldiazonium Salts
Author(s) -
Fürst Michael C. D.,
Gans Eva,
Böck Michael J.,
Heinrich Markus R.
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201703954
Subject(s) - catalysis , photochemistry , photocatalysis , substrate (aquarium) , chemistry , visible spectrum , photoredox catalysis , irradiation , ion , materials science , organic chemistry , optoelectronics , oceanography , physics , nuclear physics , geology
In the absence of a photocatalyst and other additives, the radical arylation of diverse arenes and heteroarenes has been achieved with aryldiazonium salts under visible‐light irradiation from a blue light‐emitting diode (LED). Although the course of some reactions can be rationalized by the formation of strongly light‐absorbing charge‐transfer (CT) complexes between the diazonium ion and the aromatic substrate, several further examples indicated that the simple presence of an aromatic substrate, showing only weak interactions to the diazonium ion, is fully sufficient to enable product formation.