Chiral Bis(Imidazolidine)Pyridine-Cu Complex-Catalyzed Enantioselective [3+2]-Cycloaddition of Azomethine Imines with Propiolates

Molecules

Takayoshi Arai¹ 

[1] Department of Chemistry, Graduate School of Science, Chiba University, 1-33, Yayoi, Inage, Chiba 263-8522, Japan

关键词: pyrazolone;    [3+2] cycloaddition;    asymmetric synthesis;    catalyst;    chiral ligand;   

DOI  :  10.3390/molecules17056170

来源: mdpi

【 摘 要 】

[3+2] Cycloaddition of azomethine imines with electron-deficient terminal alkynes was smoothly catalyzed by a chiral bis(imidazolidine)pyridine-CuOAc complex to give bicyclic pyrazolo[1,2-a]pyrazolone derivatives with up to 74% ee.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.