Palladium-Catalyzed, Site-Selective Direct Allylation of Aryl C–H Bonds by Silver-Mediated C–H Activation: A Synthetic and Mechanistic Investigation
作者:Sarah Yunmi Lee、John F. Hartwig
DOI:10.1021/jacs.6b10220
日期:2016.11.23
construction of a C(aryl)-C(sp3) bond by the palladium-catalyzed direct allylation of arenes with allylic pivalates in the presence of AgOPiv to afford the linear (E)-allylated arene with excellent regioselectivity; this reaction occurs with arenes that have not undergone site-selective and stereoselective direct allylation previously, such as monofluorobenzenes and non-fluorinated arenes. Mechanistic studies
Ag(<scp>i</scp>)-Mediated hydrogen isotope exchange of mono-fluorinated (hetero)arenes
作者:Guang-Qi Hu、En-Ci Li、Hong-Hai Zhang、Wei Huang
DOI:10.1039/d0ob01273d
日期:——
approach to install deuterium into mono-fluorinated (hetero)arenes by a Ag2CO3/Sphos-mediated HIE protocol with D2O as the deuterium source has been disclosed. This method showed a specific site selectivity of deuteration at the α-position of the fluorine atom, which is complementary to the existing transition metal-catalyzed HIE process.
已经公开了一种通过 Ag 2 CO 3 /Sphos 介导的 HIE 协议将氘安装到单氟化(杂)芳烃中的有效方法,其中 D 2 O 作为氘源。该方法在氟原子的 α 位显示出特定的氘化位点选择性,这与现有的过渡金属催化的 HIE 工艺互补。