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. 2021 Nov 30;22(23):12958. doi: 10.3390/ijms222312958

Figure 14.

Figure 14

(A) A nickel (II) salt-promoted cysteine arylation on peptides using 2-nitro-substituted arylboronic acids reagents; (B) A three-component assembly for the purpose of labeling peptides containing L-dihydroxyphenylalanine (L-DOPA) in one pot; (C) Peptide side-chain derivatizations Nε-Me-Lysine residue by means of the Petasis (Borono–Mannich) reaction; (D) Direct radiolabeling of peptides via copper-mediated radioiodination using an aryl boronic acid precursor.