carboxylic acids with organoborons has been realized using either mono-protected aminoacid (MPAA) ligands or mono-protected aminoethyl amine (MPAAM) ligands. A diverse range of aryl- and vinyl-boron reagents can be used as coupling partners to provide chiral carboxylic acids. This reaction provides an alternative approach to the enantioselective synthesis of cyclopropanecarboxylic acids and cyclobutanecarboxylic
Free amino group-directed C(sp2)–H arylation of α-amino-β-aryl esters by palladium catalysis
作者:Yue Gao、Yu Du、Weiping Su
DOI:10.1016/j.cclet.2023.108505
日期:2024.2
Native amino-directed palladium-catalyzedC(sp3)–H activation/functionalization has been developed for modification of α-amino acids and peptides. Herein a palladium(II)-catalyzed C(sp2)–Harylation of α-amino-β-aryl esters has been disclosed, using the native amino as the directing group. A variety of chiral α-amino-β-aryl esters can be functionalized to give the corresponding ortho-substituted mono-