Radical C−N Borylation of Aromatic Amines Enabled by a Pyrylium Reagent
作者:Yuanhong Ma、Yue Pang、Sonia Chabbra、Edward J. Reijerse、Alexander Schnegg、Jan Niski、Markus Leutzsch、Josep Cornella
DOI:10.1002/chem.202000412
日期:2020.3.23
Herein, we report a radical borylation of aromatic amines through a homolytic C(sp 2 )-N bond cleavage. This method capitalizes on a simple and mild activation via a pyrylium reagent ( Sc Pyry-OTf) thus priming the amino group for reactivity. The combination of terpyridine and a diboron reagent triggers a radical reaction which cleaves the C(sp 2 )-N bond and forges a new C(sp 2 )-B bond. The unique