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meta ‐Selective C−H Activation of Arenes at Room Temperature Using Visible Light: Dual‐Function Ruthenium Catalysis
Author(s) -
Sagadevan Arunachalam,
Greaney Michael F.
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201904288
Subject(s) - ruthenium , chemistry , photochemistry , catalysis , halide , alkyl , radical , surface modification , irradiation , organic chemistry , physics , nuclear physics
Ruthenium‐catalyzed meta ‐C−H activation of arenes at room temperature is reported to proceed under blue‐light irradiation. A variety of heteroarenes are compatible with this photochemical process, which leads to the corresponding meta C−C coupling products in good to very good yields. Initial mechanistic studies suggest a single‐electron transfer process occurs between a photoexcited Ru II ‐cyclometalated complex and alkyl halides, enabling meta ‐C−H functionalization reaction via carbon‐centered radicals.