催化作用
化学
酰胺
组合化学
螯合作用
铜
键裂
肽键
生物制药
有机化学
遗传学
生物
酶
作者
Cong Lv,Ruisheng Zhao,Xiuying Wang,Dan Liŭ,Tegshi Muschin,Zhaorigetu Sun,Chaolumen Bai,Agula Bao,Yong‐Sheng Bao
标识
DOI:10.1021/acs.joc.2c02551
摘要
Here, we demonstrate that α-C-H and C-N bonds of unactivated secondary amides can be activated simultaneously by the copper catalyst to synthesize α-ketoamides or α-ketoesters in one step, which is a challenging and underdeveloped transformation. Using copper as a catalyst and air as an oxidant, the reaction is compatible with a broad range of acetoamides, amines, and alcohols. The preliminary mechanism studies and density functional theory calculation indicated that the reaction process may undergo first radical α-oxygenation and then transamidation with the help of the resonant six-membered N,O-chelation and molecular oxygen plays a role as an initiator to trigger the transamidation process. The combination of chelation assistance and dioxygen selective oxygenation strategy would substantially extend the modern mild synthetic amide cleavage toolbox, and we envision that this broadly applicable method will be of great interest in the biopharmaceutical industry, synthetic chemistry, and agrochemical industry.
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