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.
Copper‐Catalyzed Double Friedel‐Crafts Alkylation of Tetrahydroquinolines Under Aqueous Conditions: Efficient Synthesis of gem‐Diarylacetic Esters
作者:Daggupati V. Ramana、Karu Sudheer Kumar、Ealeswarapu Srujana、Malapaka Chandrasekharam
DOI:10.1002/ejoc.201801369
日期:2019.1.31
2,2‐Bis(1,2,3,4‐tetrahydroquinolin‐6‐yl)acetates can be synthesized by using an efficient Cu‐catalyzed double Friedel‐Craftsalkylation strategy under aqueous conditions starting from N‐arylglycine esters and tetrahydroquinolines as nucleophiles. N‐methyl aniline and indoles were also applied as nucleophiles.
Double-Oxidative Dehydrogenative (DOD) Cyclization of Glycine Derivatives with Dioxane under Metal-Free Aerobic Conditions
作者:Congde Huo、Haisheng Xie、Fengjuan Chen、Jing Tang、Yajun Wang
DOI:10.1002/adsc.201500893
日期:2016.3.3
first carbon tetrabromide‐promoted novel double‐oxidative dehydrogenative cyclization/acidic ring opening/aromatization tandem reaction of glycine derivatives with dioxane for the synthesis of complex quinoline motifs has been developed (up to 71% yield). The use of very inexpensive substrates (glycine derivatives and dioxane) and an extremely simple metal‐free promoter (carbon tetrabromide) with green
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
C(sp<sup>3</sup>)–H/C(sp<sup>3</sup>)–H Dehydrogenative Radical Coupling of Glycine Derivatives
作者:Jiayuan Wang、Youwan Ye、Tongzhi Sang、Chenxing Zhou、Xiazhen Bao、Yong Yuan、Congde Huo
DOI:10.1021/acs.orglett.2c02951
日期:2022.10.21
Here we report a general C(sp3)–H/C(sp3)–H dehydrogenative coupling strategy for the preparation of various natural or unnatural amino acids from readily available glycinederivatives and hydrocarbons through a combination of SET and HAT process.
在这里,我们报告了一种通用的 C(sp 3 )–H/C(sp 3 )–H 脱氢偶联策略,用于通过 SET 和 HAT 过程的组合从现成的甘氨酸衍生物和碳氢化合物制备各种天然或非天然氨基酸。