作者:Mancuso, Raffaella、Russo, Patrizio、Prejanò, Mario、Plaumbo Piccionello, Antonio、Cuocci, Corrado、Marino, Tiziana、Gabriele, Bartolo
DOI:10.1016/j.jcat.2024.115659
日期:——
new catalytic approach to the synthesis of an important sub-class of benzofuran derivatives (namely, 2-(benzofuran-2-yl)acetamides, known to possess significant biological activities) has been developed. The new method is based on the use of Pd(PPh) as simple and commercially available catalyst, readily prepared 1-(2-(allyloxy)phenyl)-2-yn-1-ols, and commercially available isonitriles. Formation of
开发了一种新的催化方法来合成苯并呋喃衍生物的一个重要子类(即2-(苯并呋喃-2-基)乙酰胺,已知具有显着的生物活性)。新方法基于使用 Pd(PPh) 作为简单且市售的催化剂、易于制备的 1-(2-(烯丙氧基)苯基)-2-yn-1-醇和市售异腈。苯并呋喃-2-基)乙酰胺的形成源自涉及一系列有序步骤的机械途径,即苯氧基烯丙基部分氧化加成到 Pd(0)、异腈插入、水攻击随后的 (烯丙基)(亚氨基)钯配合物,从HOC-Pd(烯丙基)部分消除β-H,形成烯丙基氢化钯物质和2-(3-羟基苯并呋喃-2(3)-亚基)乙酰胺中间体,然后通过(烯丙基)PdH和MeOH。这一机理建议已得到 DFT 研究的证实,而代表性产品的结构已得到 X 射线衍射分析的证实。