A palladium nanoparticle-catalyzed aryl–amine coupling reaction: high performance of aryl and pyridyl chlorides as the coupling partner
作者:Debkumar Nandi、Rafique Ul Islam、Nishu Devi、Samarjeet Siwal、Kaushik Mallick
DOI:10.1039/c7nj03447d
日期:——
Carbon nitride (CN)-supported nanosized palladium particles, Pd–CN, have been found to be an active catalyst system for the amination of aryl and pyridyl chloride moieties in the presence of dialkyl amine under mild reaction conditions. The recyclability study of the reaction shows the stable performance of the catalyst without a significant loss of catalytic activity for a couple of cycles.
Metal‐Free Directed Site‐Selective C<i>sp</i><sup><i>3</i></sup>‐H Borylation of Saturated Cyclic Amines
作者:Puneeth Kumar Someswara Ashwathappa、Takuya Higashi、Vincent Desrosiers、Alvaro A. Omaña、Frédéric‐Georges Fontaine
DOI:10.1002/anie.202309295
日期:2023.9.25
Cyclic amines can undergo Csp3−H borylation using BBr3. At high temperature in a microwave reactor, the α-borylation is preferred, whereas the presence of a Lewis base at lower temperature will lead to the β-borylation selectively. Mechanistic studies support the presence of an enamine intermediate for both processes.
环胺可以使用 BBr 3进行 C sp 3 -H 硼基化。在微波反应器的高温下,优选发生α-硼基化,而在较低温度下路易斯碱的存在将选择性地导致β-硼基化。机理研究支持这两个过程都存在烯胺中间体。