• Used for the introduction of the acetamidomethyl group into the aromatic nucleus by electrophilic substitution. For reviews of amidomethylation, see: Org. React., 14, 52 (1965); Synthesis, 49, (1970); 85, 181 (1984).
• Thiol blocking group for cysteine residues in peptide synthesis: Tetrahedron Lett., 3057 (1968); J. Am. Chem. Soc., 91, 502 (1969); 94, 5456 (1972); Helv. Chim. Acta, 54, 927 (1971); Org. Synth. Coll., 6, 5 (1988). Cleavage can be effected with Hg(OAc)2 under mild conditions, or by treatment with iodine with concomitant oxidation to the cystine derivative. For peptide reagents, see Appendix 6.