Volume 42, Issue 24 pp. 3399-3404
Concise Report

Oxidative Alkylarylation of N-Aryl Bicyclobutyl Amides with C(sp3)–H Feedstocks via C(sp3)–H/C(sp2)–H Functionalization

Jing Yuan

Jing Yuan

Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan, 414006 China

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Jiao Zhou

Jiao Zhou

Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan, 414006 China

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Peng-Fei Xia

Peng-Fei Xia

Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan, 414006 China

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Yu Liu

Yu Liu

Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan, 414006 China

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Ke-Wen Tang

Ke-Wen Tang

Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan, 414006 China

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Jian-Hong Fan

Corresponding Author

Jian-Hong Fan

Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan, 414006 China

E-mail: [email protected]Search for more papers by this author
First published: 18 September 2024

Comprehensive Summary

The difunctionalization of bicyclo[1.1.0]butanes is an under-explored transformation that accesses to moieties that are otherwise difficult to prepare. Herein, a new oxidative radical alkylarylation of N-aryl bicyclobutyl amides with C(sp3)−H feedstocks is achieved in an atom-economic and photocatalyst- and light-free manner. This protocol follows a sequential C(sp3)–H/C(sp2)–H functionalization, providing an efficient route for diversity-oriented synthesis of functionalized 3-spirocyclobutyl oxindoles. In particular, a wide range of C(sp3)−H feedstocks, including ether, alcohol, amine, thioether, polychlorinated methane, silane, acetone, acetonitrile, toluene, and alkane are all suitable for the C(sp3)−H functionalization, demonstrating the broad applicability of this transformation.

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