期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 40, 页码 14289-14294出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201905485
关键词
dearomatization; electron transfer; energy transfer; photocatalysis; reduction
资金
- German Science Foundation (DFG) [KO 1537/18-1]
- European Research Council (ERC) under the European Union [741623]
The direct reduction of arenes and heteroarenes by visible-light irradiation remains challenging, as the energy of a single photon is not sufficient for breaking aromatic stabilization. Shown herein is that the energy accumulation of two visible-light photons allows the dearomatization of arenes and heteroarenes. Mechanistic investigations confirm that the combination of energy-transfer and electron-transfer processes generates an arene radical anion, which is subsequently trapped by hydrogen-atom transfer and finally protonated to form the dearomatized product. The photoreduction converts planar aromatic feedstock compounds into molecular skeletons that are of use in organic synthesis.
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