Activation of Chromium Catalysts by Photoexcited Hantzsch Ester for Decarboxylative Allylation of Aldehydes with Butadiene.
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DOI: 10.1021/acs.orglett.1c03098
Abstract: Metallaphotocatalysis often needs light-absorbing metal-polypyridyl complexes, semiconductors, or organic dyes, which can modify the oxidation state of metal catalysts. Here, we first report that photoexcitation of Hantzsch ester can directly activate chromium reagents through a… read more here.
Keywords: hantzsch ester; allylation aldehydes; decarboxylative allylation; activation chromium ... See more keywords
Ru-Catalyzed Hydrogen Atom Transfer/C-F Bond Cleavage of Difluoroalkyl Diazos with Hantzsch Ester via a Photocatalytic Radical Process.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c03268
Abstract: A Ru-catalyzed reaction of difluoroalkyl diazo compounds with Hantzsch ester under visible light to achieve the formation of α-fluorovinylphosphonates via a radical process has been developed. Mechanistic experiments and density functional theory calculations reveal that… read more here.
Keywords: radical process; hydrogen atom; ester; atom transfer ... See more keywords