Visible-Light-Catalyzed Tandem Radical Addition/1,5-Hydrogen Atom Transfer/Cyclization of 2-Alkynylarylethers with Sulfonyl Chlorides.
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DOI: 10.1021/acs.orglett.2c01977
Abstract: A novel visible-light-catalyzed tandem radical addition/1,5-hydrogen atom transfer/cyclization cascade of 2-alkynylarylethers with sulfonyl chlorides in 2-methyltetrahydrofuran was developed under photocatalyst- and additive-free conditions. This reaction relies on unique energy transfer and solvent-radical relay strategies to… read more here.
Keywords: catalyzed tandem; transfer; light catalyzed; tandem radical ... See more keywords
Cobalt-Catalyzed Tandem Radical Cyclization/C-C Coupling Initiated by Directed C-H Activation.
Sign Up to like & getrecommendations! Published in 2019 at "Organic letters"
DOI: 10.1021/acs.orglett.9b01846
Abstract: A cobalt-N-heterocyclic carbene catalyst promotes a tandem radical cyclization/C-C coupling reaction between tosylamide-tethered bromo-alkenes and aryl N-H imines initiated by chelation-assisted arene C-H activation, affording 3-(arylmethyl)pyrrolidine derivatives in moderate to good yields. The reaction tolerates… read more here.
Keywords: tandem radical; radical cyclization; cobalt catalyzed; activation ... See more keywords