Palladium-Catalyzed Direct α-Arylation of Indane-1,3-dione to 2-Substituted Indene-1,3-diones
作者:Natarajan Tamizharasan、Gurulingappa Hallur、Palaniswamy Suresh
DOI:10.1021/acs.joc.1c01149
日期:2021.9.3
A straightforward and feasible palladium-catalyzed direct α-arylation of indane-1,3-dione to 2-substituted aryl/heteroaryl indene-1,3-diones has been disclosed for the first time. Optimization of reaction conditions identified tBu-XPhos as a preferred ligand for the bis(acetonitrile)dichloropalladium(II) catalyst. A broad spectrum of aryl iodides and aryl triflates containing electron-donating, electron-withdrawing
首次公开了直接且可行的钯催化的茚满-1,3-二酮直接α-芳基化为2-取代芳基/杂芳基茚-1,3-二酮。反应条件的优化确定t Bu-XPhos 是双(乙腈)二氯钯(II)催化剂的优选配体。包含给电子、吸电子和空间位阻取代基的广谱芳基碘化物和芳基三氟甲磺酸酯为快速访问 α-芳基化 1,3-二酮库提供了极好的产率。