title: N-aminopyridinium salts as precursors for N-centered radicals--direct amidation of arenes and heteroarenes.
abstract: Readily prepared N-aminopyridinium salts are valuable precursors for the generation of N-centered radicals. Reduction of these salts by single electron transfer allows for clean generation of amidyl radicals. It is shown that direct radical C-H amination of heteroarenes and arenes can be achieved with N-aminopyridinium salts under mild conditions by using photoredox catalysis.
authors.affiliation: Fachbereich Chemie, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität , Corrensstraße 40, 48149 Münster, Germany.
authors.forename: Tobias W
authors.initials: TW
authors.lastname: Greulich
authors.forename: Constantin G
authors.initials: CG
authors.lastname: Daniliuc
authors.forename: Armido
authors.initials: A
authors.lastname: Studer