Dual role of benzophenone enables a fast and scalable C-4 selective alkylation of pyridines in flow
作者:Jesús Sanjosé-Orduna、Rodrigo C. Silva、Fabian Raymenants、Bente Reus、Jannik Thaens、Kleber T. de Oliveira、Timothy Noël
DOI:10.1039/d2sc04990b
日期:——
allows preparation of said C-4 alkylated pyridines. The process involves a photochemical hydrogen atom transfer (HAT) event to generate the carbon-centered radicals needed to alkylate the C-2 blocked pyridine. In a two-step streamlined flow process, this light-mediated alkylation step is combined with a nearly instantaneous inline removal of the blocking group. Notably, cheap benzophenone plays a dual