Greulich TW, Daniliuc CG, Studer A. N-aminopyridinium salts as precursors for N-centered radicals--direct amidation of arenes and heteroarenes.
Org Lett 2014;
17:254-7. [PMID:
25541887 DOI:
10.1021/ol503338b]
[Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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.
Collapse