Cu(I)–N-heterocyclic carbene-catalyzed base free C–N bond formation of arylboronic acids with amines and azoles
作者:Maoyuan Zhang、Zengbing Xu、Dabin Shi
DOI:10.1016/j.tet.2020.131861
日期:2021.1
A new N-heterocyclic carbene (NHC) precursor of imidazolium chloride and its corresponding Cu(I)–NHC complex 1 was synthesized. The complex 1 was found to be a highly effective catalyst for Chan-Evans-Lam coupling of arylboronic acid with amines and azoles (including imidazole, pyrazole and triazole), without addition of base at roomtemperature. Various substituents on three substrates can be tolerated
Electrochemical Reductive Arylation of Nitroarenes with Arylboronic Acids
作者:Dan Wang、Zhaohua Wan、Heng Zhang、Hesham Alhumade、Hong Yi、Aiwen Lei
DOI:10.1002/cssc.202101924
日期:2021.12.17
Reductive arylation: The synthesis of diarylamine is extremely important in organic chemistry. Herein, a novel electrochemical reductive arylation of arylboronicacids with nitroarenes is developed. A variety of diarylamines is synthesized without the need for transition-metal catalysts. The reaction can be scaled up efficiently in a flow cell and several derivatization reactions are carried out smoothly
N/O-doped carbon as a “solid ligand” for nano-Pd catalyzed biphenyl- and triphenylamine syntheses
作者:Shaofeng Pang、Yujing Zhang、Yongji Huang、Hangkong Yuan、Feng Shi
DOI:10.1039/c7cy00231a
日期:——
A series of N/O-doped porous carbon supported nanopalladium catalysts have been successfully prepared, in which the N/O doped carbons were controllably produced via polypyrrole/furan synthesis followed by carbonization. These catalysts exhibit good performance in biphenylamine and triphenylamine syntheses with nitrobenzene and cyclohexanone as starting materials. Their catalytic activity can be tuned
Practical Singly and Doubly Electrophilic Aminating Agents: A New, More Sustainable Platform for Carbon–Nitrogen Bond Formation
作者:Padmanabha V. Kattamuri、Jun Yin、Surached Siriwongsup、Doo-Hyun Kwon、Daniel H. Ess、Qun Li、Guigen Li、Muhammed Yousufuddin、Paul F. Richardson、Scott C. Sutton、László Kürti
DOI:10.1021/jacs.7b05279
日期:2017.8.16
symmetrical and unsymmetrical diaryl-, arylalkyl-, and dialkylamines that relies on the facile single or double addition of readily available C-nucleophiles to the nitrogen atom of bench-stable electrophilic aminating agents. Practical single and double polarity reversal (i.e., umpolung) of the nitrogen atom is achieved using sterically and electronically tunable ketomalonate-derived imines and oximes.
Es wurde eine grosse Zahl Aminoalkyl-imidazoline durch Umsetzung von Chloralkyl-imidazolinen mit Basen der aliphatischen, aromatischen und heterocyclischen Reihe dargestellt. Manche Vertreter zeigen ausgeprägte pharmakologische Eigenschaften, z.B. das 2-[N-Phenyl-N-benzyl-aminomethyl]-imidazolin („Antistin”), das 2-[Phenyl-aminomethyl]-imidazolin („Otrivin”) und das 2-[N-p-Tolyl-N-(m'-oxy-phenyl)-