Di‐ and Trifluorinated 2‐Azidobenzimidazole Derivatives: Synthesis, Photooxygenation, and
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F NMR Prediction
作者:Nils E. Kanitz、Marvin Fresia、Peter G. Jones、Thomas Lindel
DOI:10.1002/ejoc.202100603
日期:2021.7.7
Irradiation in the presence of N-protected amino acids at 300 nm (Rayonet) affords fluorinated arylesters by oxygenation of the 6-position in good to excellent yields and perfect regioselectivity. Even with the most suitable method investigated (ωB97XD/TApr-cc-pVDZ), deviations of up to 5 ppm from the experimental values were observed, underlining the importance of experimental measurements.