Enantioconvergent photoredox radical-radical coupling catalyzed by a chiral-at-rhodium complex
Sign Up to like & getrecommendations! Published in 2019 at "Science China Chemistry"
DOI: 10.1007/s11426-019-9584-x
Abstract: Racemic α-chloro imidazol-2-yl-ketones undergo an enantioconvergent photoactivated C–C bond formation with N-aryl glycines catalyzed by a single bis-cyclometalated chiral-at-rhodium catalyst in yields of up to 80% and up to 98% enantiomeric excess (ee). Control experiments… read more here.
Keywords: radical radical; rhodium; enantioconvergent photoredox; radical coupling ... See more keywords
Tandem Photoredox-Chiral Phosphoric Acid Catalyzed Radical-Radical Cross-Coupling for Enantioselective Synthesis of 3-Hydroxyoxindoles.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.1c02510
Abstract: A photochemical protocol that couples diarylamines and α-ketoesters to afford the chiral 3-hydroxyoxindoles through tandem photoredox and chiral phosphoric acid catalysis is developed. The reaction involves an enantioselective photochemical radical-radical cross-coupling process. The chiral phosphoric… read more here.
Keywords: radical radical; chiral phosphoric; phosphoric acid; radical cross ... See more keywords
Understanding titanium-catalysed radical-radical reactions: a DFT study unravels the complex kinetics of ketone-nitrile couplings.
Sign Up to like & getrecommendations! Published in 2018 at "Dalton transactions"
DOI: 10.1039/c8dt00643a
Abstract: The computational investigation of a titanium-catalysed reductive radical-radical coupling is reported. The results match the conclusions from an earlier experimental study and enable a further interpretation of the previously observed complex reaction kinetics. Furthermore, the… read more here.
Keywords: radical radical; understanding titanium; study; titanium ... See more keywords
In Situ Prepared Solar Light‐Driven Flexible Actuated Carbon Cloth‐Based Nanorod Photocatalyst for Selective Radical–Radical Coupling to Vinyl Sulfides
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DOI: 10.1111/php.13412
Abstract: A global challenge faced by light harvesting photocatalyst is how to promote the selective organic transformation, such as C‐S bond formation via radical–radical coupling under solar light. Here, we report a two‐dimensional covalent organic frameworks… read more here.
Keywords: radical radical; selective radical; solar light; photocatalyst ... See more keywords
A Qualitative Measure of Diradical Character Based on Radical–Radical Coupling Reaction
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DOI: 10.1246/cl.210267
Abstract: We propose a relationship between the diradical character and the radical–radical coupling reaction rate of the light-induced radical pair of the photochromic biimidazoles which photochemically gen... read more here.
Keywords: radical radical; radical coupling; diradical character; coupling reaction ... See more keywords