Ag-Catalyzed Chemoselective Decarboxylative Mono- and <i>gem</i>-Difluorination of Malonic Acid Derivatives
作者:Zhen Wang、Cong-Ying Guo、Cheng Yang、Jian-Ping Chen
DOI:10.1021/jacs.9b00681
日期:2019.4.10
Malonic acid derivatives have been successfully applied in a Ag-catalyzed decarboxylative fluorination reaction, providing an unprecedented route to either gem-difluoroalkanes or α-fluorocarboxylic acids by the judicious selection of base and solvent. This reaction features the use of readily available starting materials, tunable chemoselectivity and good functional group compatibility as well as gram-scale
丙二酸衍生物已成功应用于银催化的脱羧氟化反应,通过明智地选择碱和溶剂,为制备偕二氟烷烃或α-氟羧酸提供了前所未有的途径。该反应的特点是使用容易获得的起始材料、可调的化学选择性和良好的官能团兼容性以及克级合成能力。在这种自由基脱羧官能化中使用丙二酸衍生物的优势通过 α-氟代羧酸向有价值的含氟化合物的轻松转化而进一步突出。初步的机理研究表明,α-羧酸自由基参与了该反应。