Copper(II)-Catalyzed Asymmetric 1,3-Dipolar [3+4] Cycloaddition and Kinetic Resolution of Azomethine Imines with Azoalkenes
作者:Liang Wei、Zuo-Fei Wang、Lu Yao、Guofu Qiu、Haiyan Tao、Hua Li、Chun-Jiang Wang
DOI:10.1002/adsc.201600961
日期:2016.12.22
copper(II)‐catalyzedenantioselective 1,3‐dipolar [3+4] cycloaddition of azomethineimines with in situ formed azoalkenes has been realized. This strategy provides a facile access to biologically important 1,2,4,5‐tetrazepine derivatives in high yield with exclusive regioselectivity and high stereoselectivity. Moreover, enantioenriched azomethineimines could be obtained via an efficient kinetic resolution
The catalytic asymmetric synthesis of tetrahydropyridazines via inverse electron-demand aza-Diels–Alder reaction of enol ethers with azoalkenes
作者:Liang Wei、Chun-Jiang Wang
DOI:10.1039/c5cc06465a
日期:——
A highly efficient catalytic asymmetric IEDDA reaction of azoalkenes with enol ethers is reported. This methodology provides a facile entry to biologically important tetrahydropyridazines in good yield with good to excellent ee.