An organophotoredox 1,6-radical addition of 3,4-dihidroquinoxalin-2-ones to -quinone methides catalyzed by Fukuzumi's photocatalyst is described under the irradiation of a HP Single LED (455 nm). The corresponding 1,1-diaryl compounds bearing a dihydroquinoxalin-2-one moiety (20 examples) are obtained with good to excellent yields under mild reaction conditions. Several experiments have been carried out in order to propose a reaction mechanism.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251499 | PMC |
| http://dx.doi.org/10.1021/acsorginorgau.2c00064 | DOI Listing |
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