Auto-oxidation promoted sp<sup>3</sup> C–H arylation of glycine derivatives
作者:Yuanyuan Wei、Jie Wang、Yajun Wang、Xiaoqiang Yao、Caixia Yang、Congde Huo
DOI:10.1039/c8ob01068d
日期:——
An auto-oxidation promoted sp3 C–H arylation reaction between N-aryl glycine derivatives and electron-rich arenes, leading to the formation of N-aryl α-aryl α-amino acid derivatives, is described. This atom-economical and environmentally benign reaction proceeds smoothly under mild reaction conditions and requires only Brønstedacid and oxygen (balloon). A plausible radical involved mechanism is proposed
Cobalt-Catalyzed Oxidative Phosphonylation of α-Amino Acid Derivatives and α-Amino Ketones for α-Aminophosphonates
作者:Zhi-Qiang Zhu、Li-Jin Xiao、Dong Guo、Xu Chen、Jiu-Jian Ji、Xiao Zhu、Zong-Bo Xie、Zhang-Gao Le
DOI:10.1021/acs.joc.8b02680
日期:2019.1.4
A novel and efficient direct oxidative phosphonylation of α-amino ketones and α-amino acidderivatives with dialkyl phosphites by the catalysis of a cobalt salt under air is disclosed. A variety of α-amino ketones and α-amino acidderivatives underwent the reaction well with dialkyl phosphites to produce the desired α-aminophosphonates. This protocol not only provides an alternative synthetic route
Visible-light promoted α-alkylation of glycine derivatives with alkyl boronic acids
作者:Jiayuan Wang、Yingpeng Su、Zhengjun Quan、Jun Li、Jie Yang、Yong Yuan、Congde Huo
DOI:10.1039/d0cc07688k
日期:——
A visible-light-mediated aerobic α-alkylation reaction of glycine derivatives with alkyl boronicacids has been established in the presence of a Ru/Cu catalyst system, giving the desired radical coupling products efficiently. The transformation features mild reaction conditions and broad substrate scope, delivering a wide range of complex unnatural α-amino-acid derivatives.
The unprecedented title reaction between glycinederivatives and indoles, as well as the auto‐oxidative Povarov/aromatization tandem reaction of glycinederivatives with olefins are described. The reactions were performed in the absence of redox‐active catalysts and chemical oxidants under mild reaction conditions. Only simple organic solvents and air (or O2) were required.