Matches in SemOpenAlex for { <https://semopenalex.org/work/W4220742098> ?p ?o ?g. }
- W4220742098 abstract "Carbon–fluorine bond activation of the trifluoromethyl group represents an important approach to fluorine-containing molecules. While selective defluorinative functionalization reactions of CF3-containing substrates have been achieved by invoking difluorocarbocation, difluorocarboradical, or difluoroorganometallic species as the key intermediates, the transformations via fluorocarbanion mechanism only achieved limited success. Furthermore, the enantioselective defluorinative transformation of the CF3 group remained a formidable challenge. Here we report a defluorinative functionalization reaction of 4-trifluoromethylpyridines involving difluoro(pyrid-4-yl)methyl anion as the key intermediate, which was developed based upon our previous studies on the N-boryl pyridyl anion chemistry. In particular, asymmetric defluoroallylation of 4-trifluoromethylpyridines and -pyrimidines could be achieved by using Ir-catalysis to forge a difluoroalkyl-substituted chiral center." @default.
- W4220742098 created "2022-04-03" @default.
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- W4220742098 date "2022-03-21" @default.
- W4220742098 modified "2023-10-01" @default.
- W4220742098 title "Asymmetric Defluoroallylation of 4‐Trifluoromethylpyridines Enabled by Umpolung C−F Bond Activation**" @default.
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- W4220742098 doi "https://doi.org/10.1002/ange.202201102" @default.
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