Ni<sup>0</sup>-catalyzed Direct Amination of Anisoles Involving the Cleavage of Carbon–Oxygen Bonds
作者:Mamoru Tobisu、Toshiaki Shimasaki、Naoto Chatani
DOI:10.1246/cl.2009.710
日期:2009.7.5
Ni 0 -catalyzed cross-coupling of aryl methyl ethers with amines is described. The use of an N-heterocyclic carbene as a ligand and NaOt-Bu as a base promotes the amination of anisole derivatives via the cleavage of normally unreactive aryl carbon-oxygenbonds.
描述了 Ni 0 催化的芳基甲基醚与胺的交叉偶联。使用 N-杂环卡宾作为配体和 NaOt-Bu 作为碱促进苯甲醚衍生物通过通常不活泼的芳基碳-氧键的断裂进行胺化。
Buchwald-Hartwig Aminations of Aryl Chlorides: A Practical Protocol Based on Commercially Available Pd(0)-NHC Catalysts
作者:L. J. Gooßen、A. Rivas-Nass、J. Paetzold、O. Briel、R. Karch、B. Kayser
DOI:10.1055/s-2004-837205
日期:——
naphthoquinone imidazolin-2-ylidene-palladium(0) complexes were found to be highlyactive one-component catalysts for the amination of aryl halides. With these very robust catalysts, the expensive bases Cs 2 CO 3 or NaOt-Bu traditionally used can be replaced by KOH. A convenient reaction protocol has been developed for the coupling of a wide range of arylchlorides with primary or secondary amines.
Provided herein are nickel(O) catalysts that are stable when exposed to air and can be used to catalyze the formation of a C-C, C-O, or C-N bond.
提供于此的镍(0)催化剂在暴露于空气时稳定,并且可用于催化形成C-C、C-O或C-N键。
Amination of Aryl Halides Mediated by Electrogenerated Nickel from Sacrificial Anode
作者:Farah Daili、Stéphane Sengmany、Eric Léonel
DOI:10.1002/ejoc.202100194
日期:2021.5.7
C(sp2)−N bond formation only mediated by nickel salts electrogenerated from the sacrificial anode has been investigated for the first time to prepare functionalized arylamine derivatives. The cross‐couplings are performed under constant current electrolysis, in an undivided cell, and without additional ligand at room temperature.
General Paradigm in Photoredox Nickel‐Catalyzed Cross‐Coupling Allows for Light‐Free Access to Reactivity
作者:Rui Sun、Yangzhong Qin、Daniel G. Nocera
DOI:10.1002/anie.201916398
日期:2020.6.8
Self‐sustained NiI/III cycles are established as a potentially generalparadigm in photoredox Ni‐catalyzed carbon–heteroatom cross‐coupling reactions through a strategy that allows us to recapitulate photoredox‐like reactivity in the absence of light across a wide range of substrates in the amination, etherification, and esterification of aryl bromides, the latter of which has remained, hitherto, elusive
自我维持的Ni I / III循环被确立为光氧化还原Ni催化的碳-杂原子交叉偶联反应中的潜在一般范式,其策略是使我们能够在没有光的情况下在各种各样的底物上重现类似光氧化还原的反应性。在芳基溴化物的胺化,醚化和酯化反应中,迄今为止,后者在热镍催化下仍然难以捉摸。此外,在没有光照的情况下酯化的可及性尤其显着,因为先前在光氧化还原条件下对该转化进行的机理研究一致地调用了能量转移介导的途径。