Rostoll-Berenguer J, Martín-López M, Blay G, Pedro JR, Vila C. Radical Addition of Dihydroquinoxalin-2-ones to Trifluoromethyl Ketones under Visible-Light Photoredox Catalysis.
J Org Chem 2022;
87:9343-9356. [PMID:
35790099 PMCID:
PMC9295130 DOI:
10.1021/acs.joc.2c01139]
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Abstract
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A visible-light photocatalytic
radical addition reaction of dihydroquinoxalin-2-ones
to trifluoromethyl ketones has been established using Ru(bpy)3Cl2 as photocatalyst, acetonitrile as solvent,
and HP Single Blue LED as the source of light. The reaction provides
a straightforward approach to the synthesis of dihydroquinoxalin-2-ones
bearing a trifluoromethyl-substituted tertiary alcohol moiety in moderate
to good yields under mild conditions.
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