Photochemical C-F Activation Enables Defluorinative Alkylation of Trifluoroacetates and -Acetamides
Mark W. Campbell, Viktor C. Polites, Shivani Patel, Juliette E. Lipson, Jadab Majhi and Gary A. Molander*
*Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States, Email: gmolandrsas.upenn.edu
M. W. Campbell, V. C. Polites, S. Patel, J. E. Lipson, J. Majhi, G. A. Molander, J. Am. Chem. Soc., 2021, 143, 19648-19654.
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A photochemically mediated defluorinative hydroalkylation of ethyl trifluoroacetate with a diverse suite of alkenes in the presence of sodium formate enables a concise synthetic approach to novel gem-difluoro analogs of FDA-approved pharmaceutical compounds. Furthermore, trifluoroacetamides can also be functionalized via synergistic Lewis acid/photochemical activation.
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α-fluorocarboxylic esters, alkylation, sodium formate, photochemistry