Volume 135, Issue 7 e202216534
Forschungsartikel

A Dynamic Kinetic Resolution Approach to Axially Chiral Diaryl Ethers by Catalytic Atroposelective Transfer Hydrogenation

Linlong Dai

Linlong Dai

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

Department of Chemistry, Eastern Institute for Advanced Study, Ningbo, China

School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, China

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Yuheng Liu

Yuheng Liu

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

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Qing Xu

Qing Xu

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

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Meifang Wang

Meifang Wang

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

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Dr. Qiaohong Zhu

Dr. Qiaohong Zhu

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

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Prof. Dr. Peiyuan Yu

Prof. Dr. Peiyuan Yu

Department of Chemistry, Southern University of Science and Technology, Shenzhen, China

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Prof. Dr. Guofu Zhong

Corresponding Author

Prof. Dr. Guofu Zhong

Department of Chemistry, Eastern Institute for Advanced Study, Ningbo, China

School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, China

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Prof. Dr. Xiaofei Zeng

Corresponding Author

Prof. Dr. Xiaofei Zeng

College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

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First published: 19 December 2022
Citations: 3

Abstract

Diaryl ethers are widespread in biologically active compounds, ligands and catalysts. It is known that the diaryl ether skeleton may exhibit atropisomerism when both aryl rings are unsymmetrically substituted with bulky groups. Despite recent advances, only very few catalytic asymmetric methods have been developed to construct such axially chiral compounds. We describe herein a dynamic kinetic resolution approach to axially chiral diaryl ethers via a Brønsted acid catalyzed atroposelective transfer hydrogenation (ATH) reaction of dicarbaldehydes with anilines. The desired diaryl ethers could be obtained in moderate to good chemical yields (up to 79 %) and high enantioselectivities (up to 95 % ee) under standard reaction conditions. Such structural motifs are interesting precursors for further transformations and may have potential applications in the synthesis of chiral ligands or catalysts.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article.

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