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
A novel and efficient stable radical cation triarylaminiumsalt‐catalyzed aerobic double Friedel–Crafts alkylation reaction of glycine derivatives with indoles has been developed. The reaction was performed in the absence of any other additives under mild conditions and only requires an air atmosphere (or oxygen, 1 atm) as co‐oxidant.
AbstractA novel CBr4‐mediated dehydrogenative Povarov/aromatization tandem reaction of glycine derivatives with alkenes, leading to complex quinoline derivatives, and a CBr4‐mediated dehydrogenative CH functionalization of N‐aryl tetrahydroisoquinolines with nucleophiles to form CC and CP bonds are reported. The reactions were performed under very simple and mild reaction conditions; only CBr4 was used as a promoter. A plausible mechanism involving a radical process is proposed.
Copper(I) Chloride-Catalyzed Aerobic Oxidative Arylation of Glycine Ester and Amide Derivatives
AbstractA simple and efficient copper(I) chloride‐catalyzed aerobic oxidative coupling of glycine derivatives (glycine esters, glycine amides and short peptides) with indoles has been developed. The reaction is performed in the absence of any other additives under mild conditions and only requires simple copper salts as a catalyst and oxygen as a co‐oxidant.magnified image
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.