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银催化的环己二烯酮不对称去对称化反应通过范路森吡咯合成。

Silver-Catalyzed Asymmetric Desymmetrization of Cyclohexadienones via Van Leusen Pyrrole Synthesis.

机构信息

Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea.

Department of Global Innovative Drugs, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea.

出版信息

Org Lett. 2022 Mar 11;24(9):1812-1816. doi: 10.1021/acs.orglett.2c00240. Epub 2022 Feb 24.

Abstract

A catalytic asymmetric desymmetrization of cyclohexadienones was accomplished via Van Leusen pyrrole synthesis in the presence of a chiral silver catalyst. The ready access to chiral-fused pyrrole derivatives is attributed to the identification of a suitable isocyanomethyl sulfone surrogate, NasMIC. The current Ag(I)-chiral phosphino-carboamide ligand system can be extended to the kinetic resolution of racemic cyclohexadienones, capitalizing on the differentiated reactivity of chiral quaternary complexes from AgSbF, chiral ligand (*), cyclohexadienone, and NasMIC.

摘要

通过在手性银催化剂存在下进行范路森吡咯合成,实现了环己二烯酮的催化不对称去对称化。通过鉴定合适的异氰甲基砜替代物 NasMIC,很容易获得手性稠合吡咯衍生物。当前的 Ag(I)-手性膦酰胺配体体系可以扩展到外消旋环己二烯酮的动力学拆分,利用 AgSbF、手性配体(*)、环己二烯酮和 NasMIC 之间的手性季铵配合物的差异反应性。

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