Palladium <scp>Iodide‐Catalyzed</scp> Selective Carbonylative Double Cyclization of 4‐(<scp>2‐Aminophenyl</scp>)‐3‐yn‐1‐ols to Dihydrofuroquinolinone Derivatives
作者:Raffaella Mancuso、Alex De Salvo、Patrizio Russo、Aurelia Falcicchio、Nicola Della Ca’、Leonardo Pantoja Munoz、Bartolo Gabriele
DOI:10.1002/cjoc.202300277
日期:2023.11
The PdI2/KI-catalyzed oxidative carbonylation of 4-(2-aminophenyl)-3-yn-1-ols, bearing two potential nucleophilic groups in suitable position selectively leads to dihydrofuroquinolinone derivatives in fair to high yields (60%—89%) and excellent turnover numbers (180—267 mol of product per mol of Pd) over 19 examples, through a mechanistic pathway involving initial O-cyclization followed by N-cyclocarbonylation
PdI 2 /KI 催化的 4-(2-氨基苯基)-3-yn-1-醇的氧化羰基化,在合适的位置上带有两个潜在的亲核基团,选择性地产生二氢呋喃喹啉酮衍生物,收率相当高(60%—89%) )和优异的周转率(每摩尔 Pd 180-267 摩尔产物)超过 19 个实施例,通过涉及初始O环化随后N环羰基化的机械途径。在这一过程中,在一个合成步骤中实现了两个环和三个新键的选择性催化构建,以从容易获得的材料开始提供高附加值的稠合杂环结构。