A study of cobalt-catalyzed C–H functionalization of phenylglycine derivatives with alkynes is described. During the optimization studies, a range of cobalt catalysts, oxidants, base additives, and reaction solvents were evaluated. Product yield dependence on phenylglycine ester substituent was evaluated. Conditions for 1,2-dihydroisoquinoline synthesis with acceptable yield were found.
Modular Synthesis of α-Aryl-α-Heteroaryl α-Amino Acid Derivatives via a Copper-Catalyzed Cross-Dehydrogenative-Coupling Reaction Using Air as the Sole Oxidant
作者:Xiangxiang Kong、Jing Ren、Jinlong Li、Yu Liu、Kaizhi Li
DOI:10.1021/acs.orglett.3c01934
日期:2023.10.6
copper-catalyzed cross-dehydrogenative-coupling (CDC) process of arylglycine derivatives with N-heteroarenes for the straightforward synthesis of α-aryl-α-heteroaryl α-aminoacid scaffolds has been successfully developed. This protocol exhibits a broad substrate scope with good functional group compatibility by utilizing air as the sole oxidant. The use of the reaction is also displayed through the late-stage functionalization