This study presents a Pd(II)-catalyzed method for the β-C(sp3)–H arylation of N-Cbz- or N-Fmoc-protected N-methyl alanines, providing ready access to building blocks for N-methylated peptide synthesis. For this transformation, the native carboxylate was exploited as the directing group, attributing its success to the use of a monoprotected amino-pyridine ligand. Its synthetic utility was demonstrated
本研究提出了一种 Pd(II) 催化的N -Cbz- 或N -Fmoc-保护的N-甲基丙
氨酸的 β-C(sp 3 )–H 芳基化方法,为N-甲基化肽的构建模块提供了方便的途径合成。对于这种转化,利用天然
羧酸盐作为导向基团,将其成功归因于单保护的
氨基-
吡啶配体的使用。通过轻松生成天然存在的N-甲基化环肽环肽 A 的九种类似物,证明了其合成效用。