Visible-light-driven nickel-catalyzed reductive cross-coupling of benzyltrimethylammonium triflates with aryl
Ren-Gui Tian1, Mengyao Yu1, Bo Ni1
1Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Precision and Intelligent Chemistry, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China. mlzhang02@ustc.edu.cn.
Abstract:
Diarylmethanes are significant molecules in organic synthesis and play a vital role in pharmaceutical development. In this context, we successfully developed a visible-light-driven nickel-catalyzed cross-coupling of readily available benzyltrimethylammonium triflates with aryl bromides, enabling the direct synthesis of various diarylmethane products without the need for metal-reducing agents. Mechanistic studies have revealed that benzyl radicals, generated through photocatalysis, may serve as key intermediates, offering a novel approach to the reductive coupling of organic quaternary ammonium salts.
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