Visible‐Light‐Induced Carbo‐2‐pyridylation of Electron‐Deficient Alkenes with Pyridinium Salts

Abstract

A simple and practical visible‐light‐induced carbo‐2‐pyridylation of electron‐deficient alkenes with readily available N‐benzoylmethylpyridinium bromides is reported. More than 40 examples are presented and proceed in greater than 80 % yield (on average) with excellent regio‐ and diastereoselectivities.

Photo-triggered C-arylation of active-methylene compounds with diazonium salts via an electron donor–acceptor (EDA) complex

“…Recently, the development of environmentally friendly technology for the radical generation, specifically the EDA complex process, has gained significant attention in organic synthesis because of its ability to avoid the use of expensive transition metal catalysts, toxic reagents, and explosive oxidants. [38][39][40][41][42] An EDA complex consists of two types of molecules, an electron donor and an electron acceptor, which form an aggregate.…”