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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: J Am Chem Soc. 2020 Jun 23;142(26):11388–11393. doi: 10.1021/jacs.0c05362

Figure 1.

Figure 1.

Azides are important intermediates in organic syntheses (A) and medicinal chemistry (B) and are ideally prepared by direct azidation of sp3 C─H bonds (C). NFSI, N-fluorobenzenesulfonimide. Mes-Acr, 9-mesityl-10-alkylacridinium catalyst.