Radical coupling of -ketoesters and amides promoted by Brønsted/Lewis acids.

Green Synth Catal

Department of Chemistry, Center for Molecular Innovation and Drug Discovery, Northwestern University, Evanston, IL 60208, United States.

Published: June 2020

Recent advances in photocatalysis have enabled radical methods with complementary chemoselectivity to established two electron bond forming approaches. While this radical strategy has previously been limited to substrates with favorable redox potentials, Brønsted/Lewis acid activation has emerged as a means of facilitating otherwise difficult reductions. We report herein our investigations into the Lewis acid-promoted redox activation of -ketocarbonyls in a model photocatalytic radical alkylation reaction. Rapid evaluation of substrates and reactions conditions was achieved by high throughput experimentation using 96-well plate photoreactors.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8411943PMC
http://dx.doi.org/10.1016/j.gresc.2020.06.003DOI Listing

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