Volume 42, Issue 24 pp. 3393-3398
Concise Report

Synthesis of Indole-Fused Eight-Membered Oxa-Rings via Palladium-Catalyzed Asymmetric [4+4] Cycloaddition of Indole-2,3-Quinodimethanes with 2-Alkylidenetrimethylene Carbonates

Xinhao Lu

Xinhao Lu

Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004 China

These authors contributed equally to this work.

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Yi Wang

Yi Wang

Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237 China

These authors contributed equally to this work.

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Chenghan He

Chenghan He

School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172 China

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Yang-Zi Liu

Corresponding Author

Yang-Zi Liu

Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004 China

E-mail: [email protected]; [email protected]Search for more papers by this author
Wei-Ping Deng

Corresponding Author

Wei-Ping Deng

Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, Zhejiang, 321004 China

Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237 China

E-mail: [email protected]; [email protected]Search for more papers by this author
First published: 16 September 2024
Citations: 4

Comprehensive Summary

We report a palladium-catalyzed asymmetric [4+4] cycloaddition reaction between 2-alkylidenetrimethylene carbonate and electron-deficient indole-2,3-quinodimethanes (IQDMs). This reaction features exclusive regioselectivity, high yield (up to 98%), excellent enantioselectivity (up to 95% ee), and easy scale-up without any loss of efficiency, making it valuable for the synthesis of indole-fused eight-membered oxa-rings.

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