Palladium(II)-Catalyzed Selective Monofluorination of Benzoic Acids Using a Practical Auxiliary: A Weak-Coordination Approach
作者:Kelvin S. L. Chan、Masayuki Wasa、Xisheng Wang、Jin-Quan Yu
DOI:10.1002/anie.201102985
日期:2011.9.19
Finally, a choice! A highly selective palladium(II)‐catalyzed ortho‐monofluorination reaction has been achieved for the first time through a weak coordination (see scheme; Ar=2,3,5,6‐tetrafluoro‐4‐(trifluoromethyl)phenyl). Simple modification of this protocol allows for a choice between mono‐ and difluorination. The mono‐ and difluorinated benzoic acid derivatives are valuable in the pharmaceutical
最后,一个选择!通过弱配位,首次实现了高选择性的钯(II)催化的邻一氟化反应(参见方案; Ar = 2,3,5,6-四氟-4-(三氟甲基)苯基)。对该协议进行简单修改即可在单氟化和二氟化之间进行选择。一氟和二氟苯甲酸衍生物在制药和农用化学工业中很有价值。