Chemoselective Ru-Catalyzed Oxidative Lactamization <i>vs</i> Hydroamination of Alkynylamines: Insights from Experimental and Density Functional Theory Studies
作者:Andrés M. Álvarez-Constantino、Andrea Álvarez-Pérez、Jesús A. Varela、Giuseppe Sciortino、Gregori Ujaque、Carlos Saá
DOI:10.1021/acs.joc.2c02770
日期:2023.1.20
(lactamization) of aromatic alkynylamines with 4-picoline N-oxide as an external oxidant has been developed. This chemoselective process is very efficient to achieve medium-sized ε- and ζ-lactams (seven- and eight-membered rings) but not for the formation of common δ-lactams (six-membered rings). DFT studies unveiled the capital role of the chain length between the amine and the alkyne functionalities:
已经开发了以 4-甲基吡啶N-氧化物作为外部氧化剂的 Ru 催化的芳香族炔胺的分子内氧化酰胺化(内酰胺化) 。这种化学选择性过程对于获得中等大小的 ε- 和 ζ-内酰胺(七元环和八元环)非常有效,但对于形成常见的 δ-内酰胺(六元环)则无效。DFT 研究揭示了胺和炔官能团之间链长的重要作用:连接器越长,内酰胺化过程与加氢胺化过程越有利。