Cp*Ir complexes bearing a 2-picolinamide moiety serve as effective catalysts for the direct reductive amination of ketoniccompounds to give primary amines under transfer hydrogenation conditions using ammonium formate as both the nitrogen and hydrogen source. The clean and operationally simple transformation proceeds with a substrate to catalyst molar ratio (S/C) of up to 20,000 at relatively low
Reaction of N-fluoropyridinium fluoride with isonitriles and TMSN3: a convenient one-pot synthesis of tetrazol-5-yl pyridines
作者:Alexander S. Kiselyov
DOI:10.1016/j.tetlet.2005.05.066
日期:2005.7
Reaction of N-fluoropyridiniumfluoride generated in situ with a series of isonitriles and TMSN3 led to the formation of the corresponding tetrazol-5-yl pyridines in good yields (37–84%). A similar reaction sequence for quinoline yielded the respective derivatives of 2-quinoline. The proposed reaction mechanism involves the intermediate formation of a highly reactive carbene species.
Reaction of N-fluoropyridinium fluoride with isonitriles and diazo compounds: a one-pot synthesis of (pyridin-2-yl)-1H-1,2,3-triazoles
作者:Alexander S. Kiselyov
DOI:10.1016/j.tetlet.2006.02.030
日期:2006.4
Reaction of N-fluoropyridiniumfluoride generated in situ with a series of isonitriles and diazo compounds led to the formation of the corresponding (pyridine-2-yl)-1H-1,2,3-triazoles in good yields (37–59%). Best outcome was consistently achieved with both aromatic isonitriles and stabilized diazo derivatives. The proposed reaction mechanism involves the intermediate formation of a highly reactive
原位生成的N-氟吡啶鎓氟化物与一系列异腈和重氮化合物的反应导致形成了相应的(吡啶-2-基)-1 H -1,2,3-三唑,收率很高(37-59% )。芳族异腈和稳定的重氮衍生物均能始终达到最佳结果。所提出的反应机理涉及高反应性卡宾物质的中间形成。
Copper-catalyzed <i>ortho</i>-C(sp<sup>2</sup>)–H amination of benzamides and picolinamides with alkylamines using oxygen as a green oxidant
作者:Qiong Li、Jie Huang、Gong Chen、Shui-Bo Wang
DOI:10.1039/d0ob00784f
日期:——
A versatile Cu-catalyzed direct ortho-C(sp2)–H amination of benzamides and picolinamides with alkylamines has been achieved.
Copper-Catalyzed Electrochemical C–H Amination of Arenes with Secondary Amines
作者:Qi-Liang Yang、Xiang-Yang Wang、Jia-Yan Lu、Li-Pu Zhang、Ping Fang、Tian-Sheng Mei
DOI:10.1021/jacs.8b07380
日期:2018.9.12
electrochemical C-H aminations of arenes at room temperature using undivided electrochemical cells, thereby providing a practical solution for the construction of arylamines. The use of n-Bu4NI as a redox mediator is crucial for this transformation. On the basis of mechanistic studies including kinetic profiles, isotope effects, cyclic voltammetric analyses, and radical inhibition experiments, the reaction appears