Nickel-Catalyzed Coupling Reaction of α-Bromo-α-fluoroketones with Arylboronic Acids toward the Synthesis of α-Fluoroketones
作者:Junqing Liang、Jie Han、Jingjing Wu、Pingjie Wu、Jian Hu、Feng Hu、Fanhong Wu
DOI:10.1021/acs.orglett.9b02474
日期:2019.9.6
A nickel-catalyzed coupling reaction of α-bromo-α-fluoroketones with arylboronic acids was reported, which provides an efficient pathway to access 2-fluoro-1,2-diarylethanones in high yields. We also disclosed the synthesis of the monofluorination agents α-bromo-α-fluoroketones by using a trifluoroacetate release protocol. Mechanistic investigation indicated that a monofluoroalkyl radical is involved
据报道,镍催化的α-溴-α-氟代酮与芳基硼酸的偶联反应,为高产率地获得2-氟-1,2-二芳基酮提供了一条有效途径。我们还公开了通过使用三氟乙酸盐释放方案来合成单氟化剂α-溴-α-氟代酮。机理研究表明,单氟烷基参与了催化环。此外,通过镍催化的α-溴-α-氟-2-吲哚酮与硼酸酯的偶联反应,合成了氟多卡因的重要医药中间体。