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.
作者:Jialin Xie、Yuanqiong Huang、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1021/acs.orglett.7b02767
日期:2017.11.17
An atom-economical method for accessing tetrasubstituted 4,5-biscarbonylimidazoles by reaction between glycine derivatives and 5-alkoxyoxazoles is reported. The method, which involves a copper-catalyzedaerobic oxidative [2 + 3] cyclization/aromatization cascade process, starts from readily available and inexpensive materials, uses molecular oxygen as a co-oxidant, and has a broad substrate scope.
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
作者:Jia Liang、Ying Fu、Xiazhen Bao、Lanlan Ou、Tongzhi Sang、Yong Yuan、Congde Huo
DOI:10.1039/d0cc08126d
日期:——
We report a catalytic oxidative C–H cyanation of glycinederivatives using a simple copper(I) catalyst with NFSI as an oxidant via a radical process to furnish α-cyano glycinederivatives, which are useful intermediates for organic synthesis. CuCl acted as both a one-electron reductant and a transition-metal catalyst in this transformation. NFSI served as a one-electron oxidant and generated a N-centered