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. 2023 Mar 21;9(4):614–638. doi: 10.1021/acscentsci.3c00051

Figure 2.

Figure 2

a) Overview of current side-chains that can be attached via radical additions to canonical AAs. b) Selected mechanisms for some common approaches to “off-protein” carbon-centered C• radicals with utility in reactions with canonical AAs. These include (i) sulfinate salts in conjunction with direct oxidant4345 e.g. TBHP; (ii) sulfinate salts in conjunction with photocatalytic oxidant;46 and (iii) hypervalent iodine salts in conjunction with ascorbate salts.47