Metal-free di- and tri-fluoromethylation of alkenes realized by visible-light-induced perylene photoredox catalysis.
Metal-free di- and tri-fluoromethylation of alkenes realized by visible-light-induced perylene photoredox catalysis.
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DOI:
10.1039/c7sc01703k
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发表时间:
2017-09-01
期刊:
影响因子:
8.4
通讯作者:
Akita M
中科院分区:
文献类型:
--
作者:
Noto N;Koike T;Akita M
A new electrophilic CF2H reagent and metal-free photocatalytic di- and tri-fluoromethylation by perylene were developed. Regioselective amino-difluoromethylation of aromatic alkenes via C(sp3)–CF2H and C(sp3)–N bond formation with the CC moiety has been achieved in a single operation by visible-light photoredox catalysis. The combination of a shelf-stable and easy-to-handle sulfonium salt, S-difluoromethyl-S-di(p-xylyl)sulfonium tetrafluoroborate, and perylene catalysis is the key to the successful transformation. Furthermore, this noble metal-free protocol allows for the photocatalytic trifluoromethylation of alkenes.
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