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Sulfur-Directed α-C(sp3)–H Amidation of Pyrrolidines with Dioxazolones under Rhodium Catalysis
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    Sulfur-Directed α-C(sp3)–H Amidation of Pyrrolidines with Dioxazolones under Rhodium Catalysis
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    Organic Letters

    Cite this: Org. Lett. 2024, 26, 1, 57–61
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    https://doi.org/10.1021/acs.orglett.3c03633
    Published December 22, 2023
    Copyright © 2023 American Chemical Society

    Abstract

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    Site-selective functionalization of saturated N-heterocycles such as pyrrolidines is a central topic in organic synthesis and drug discovery. We herein report the sulfur-assisted rhodium(III)-catalyzed sp3 C–H amidation of pyrrolidines with dioxazolones as amidating agents. The amenability of the thioamide directing group is elucidated by a series of control experiments.

    Copyright © 2023 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.orglett.3c03633.

    • General methods, experimental procedure and characterization data of all compounds, gram-scale experiment with 1d, deuterium labeling experiment, and 1H, 13C, and 19F NMR spectra and HRMS data for all products (PDF)

    • FAIR data, including the primary NMR FID files, for compounds 1a1f, 3aa, 3ba, 3da3ds, 3ea, 3fa, 6a, 7a, 7b, 8a, 9b, deuterio-1d, deuterio-3da, 10a, and 10b (ZIP)

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    CCDC 2289414 and 2308915 contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/data_request/cif, or by emailing [email protected], or by contacting The Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB2 1EZ, UK; fax: +44 1223 336033.

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    Cited By

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    This article is cited by 4 publications.

    1. Shi-Hui Shi, Qing-Gen Wang, Yi-Han Yang, Xue Li, Cheng Wang, Bin Chen, Chen-Ho Tung, Li-Zhu Wu. Skeletal Reorganization of Saturated Six-Membered Aza-cycles to Sulfonated Pyrrolidines under Redox-Neutral Conditions. Organic Letters 2025, 27 (13) , 3420-3425. https://doi.org/10.1021/acs.orglett.5c00815
    2. Jeonghyun Min, Keunju Park, Kyeongwon Moon, Hyung Sik Kim, Pargat Singh, In Su Kim. Thione-Directed C–H Amidation of Chromone Analogues with Dioxazolones under Rh(III) Catalysis. Organic Letters 2024, 26 (42) , 9157-9161. https://doi.org/10.1021/acs.orglett.4c03646
    3. Tengfei Zhang, Zhe Chang, Chunxia Chen, Jinsong Peng. Progress in Functionalization of N- α -C sp 3—H Bond Catalyzed by Transition Metals. Chinese Journal of Organic Chemistry 2025, 45 (1) , 168. https://doi.org/10.6023/cjoc202404040
    4. Bosen Wang, Hao Li, Minmin Liu, Jiayi Lin, Chenglei Yang, Zhongkai Zhao, Dianjun Li, Jinhui Yang. Visible-light-induced Fe( iii )-promoted reduction amidation of 1,4,2-dioxazol-5-one. New Journal of Chemistry 2024, 48 (30) , 13654-13658. https://doi.org/10.1039/D4NJ02305F

    Organic Letters

    Cite this: Org. Lett. 2024, 26, 1, 57–61
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.orglett.3c03633
    Published December 22, 2023
    Copyright © 2023 American Chemical Society

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