Electrochemical meta-C–H sulfonylation of pyridines with nucleophilic sulfinates

Autor: Shi Qin, Mingkai Yang, Mingyao Xu, Zhi-Huan Peng, Jiating Cai, Shengdong Wang, Hui Gao, Zhi Zhou, A. Stephen K. Hashmi, Wei Yi, Zhongyi Zeng
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Druh dokumentu: article
ISSN: 2041-1723
78506344
DOI: 10.1038/s41467-024-50644-y
Popis: Abstract Considering the indispensable significance and utilities of meta-substituted pyridines in medicinal, chemical as well as materials science, a direct meta-selective C–H functionalization of pyridines is of paramount importance, but such reactions remain limited and highly challenging. In general, established methods for meta C–H functionalization of pyridines rely on the utilization of tailored electrophilic reagents to realize the intrinsic polarity match. Herein, we report a complementary electrochemical methodology; diverse nucleophilic sulfinates allow meta-sulfonylation of pyridines through a redox-neutral dearomatization-rearomatization strategy by a tandem dearomative cycloaddition/hydrogen-evolution electrooxidative C–H sulfonation of the resulting oxazino-pyridines/acid-promoted rearomatization sequence. Besides, several salient features, including exclusive regiocontrol, remarkable substrate/functional group compatibility, scale-up potential, and facile late-stage modification, have been demonstrated, which further contributes to the practicality and adaptability of this approach.
Databáze: Directory of Open Access Journals
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