The l -tert-leucine-derived AmidPhos/silver(I) catalytic system has been developed for the asymmetric [3+2] cycloaddition of azomethineylides with electronic-deficient alkenes with or without Et3N. Under optimal conditions, highly functionalized endo-4-pyrrolidines were obtained with modest to high yields (up to 99% yield) and enantioselectivities (up to 98% ee).
A Highly Enantioselective Copper/Phosphoramidite-Thioether-Catalyzed Diastereodivergent 1,3-Dipolar Cycloaddition of Azomethine Ylides and Nitroalkenes
full control of the absolute and relative stereochemical configurations. Here, we report the application of our previously developed modular phosphoramidite‐thioether ligands for the copper‐catalyzed diastereodivergent asymmetric 1,3‐dipolar cycloaddition of azomethine ylides and nitroalkenes. Our catalytic system enables wide substrate scope, great stereochemical control, and high reaction efficiency
Synthesis of Pyrrole via a Silver-Catalyzed 1,3-Dipolar Cycloaddition/Oxidative Dehydrogenative Aromatization Tandem Reaction
作者:Yan Liu、Huayou Hu、Xiang Wang、Sanjun Zhi、Yuhe Kan、Chao Wang
DOI:10.1021/acs.joc.7b00180
日期:2017.4.21
literature pertaining to the synthesis of pyrroles from simple alkenes using a one-pot sequential 1,3-dipolar cycloaddition/aromatization reaction sequence. Herein, we report the development of a benzoyl peroxide-mediated oxidative dehydrogenative aromatization reaction for the construction of pyrroles. We subsequently developed a one-pot tandem reaction that combined this new method with a well-defined
Silver-Catalyzed [3+3] Annulation of Glycine Imino Esters with Seyferth–Gilbert Reagent To Access Tetrahydro-1,2,4-triazinecarboxylate Esters
作者:Chi Wai Cheung、Jun-An Ma、Yin-Jun Huang、Jing Nie
DOI:10.1055/s-0039-1690894
日期:2020.7
A silver-catalyzed protocol for [3+3] annulation of glycine imino esters with Seyferth–Gilbert reagent was developed. A variety of phosphorylated tetrahydro-1,2,4-triazinecarboxylate esters were synthesized in moderate to good yields and with excellent diastereoselectivities. The dehydrogenation of a tetrahydro-1,2,4-triazine product to the corresponding triazine counterpart was also demonstrated.
Ag(I)/sec-Amine-Amidphos-Catalyzed endo-Stereoselective Synthesis of Fully Substituted Pyrrolidines via 1,3-Dipolar Cycloaddition Based on Azomethine Ylides
作者:Haiyun Jiang、Haifei Wang、Chen Zhang、Jialin Liu、Xinluo Song
DOI:10.3987/com-20-14230
日期:——
Ag(I)/Sec-Amine-Amidphos-Catalyzed Endo-stereoselective Synthesis of Fully SubstitutedPyrrolidines via 1,3-DipolarCycloaddition Based on AzomethineYlides Haifei Wang, Chen Zhang, Jialin Liu, Xinluo Song, and Haiyun Jiang* College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou 412007, P. R. of China; College of Packaging and Materials Engineering, Hunan University of Technology
Ag(I)/Sec-Amine-Amidphos-催化全取代吡咯烷的 1,3-偶极环加成反应基于偶氮甲亚胺 Ylides Haifei Wang, Chen Zhang, Jialin Liu, Xinluo Song, and Haiyun Jiang * College of Life湖南工业大学科学与化学, 株洲 412007; 湖南工业大学包装与材料工程学院, 株洲 412007; 邮箱:jhyun@163.com