Highly efficient and practical phosphoramidite–copper catalysts for amination of aryl iodides and heteroaryl bromides with alkylamines and N(H)-heterocycles
作者:Zhanjin Zhang、Jincheng Mao、Di Zhu、Fan Wu、Huilin Chen、Boshun Wan
DOI:10.1016/j.tet.2006.02.062
日期:2006.5
A highly efficient copper-catalyzed system using phosphoramidite as ligands was applied to N-arylation of alkylamines and N(H)-heterocycles with aryl iodides and heteroarylbromides. The reactions were carried out in relative mild conditions and good to excellent yields were obtained.
but efficient: Aza‐fused polycyclic quinolines were efficiently assembled throughrhodium(III)‐based direct double CHactivation of N‐aryl azoles followed by cyclization with alkynes without heteroatom‐assisted chelation. Copper(II) acetate, aside from acting as an oxidant, could also play an important role in the CHactivation process.
A Versatile and Efficient Cu-Catalyzed N-Arylation of Aromatic Cyclic Secondary Amines with Aryl Halides
作者:Haitao Yang、Zhiwei Miao、Ruyu Chen
DOI:10.2174/157017811795684974
日期:2011.6.1
A copper-catalyzed coupling reaction of aryl halides with various aromatic cyclic secondary amines in DMSO has been developed efficiently. The versatile and efficient copper catalyst system is of wide-spread and practical application in cross-coupling reactions.
Catalyst-Free N-Arylation Using Unactivated Fluorobenzenes
作者:Frederik Diness、David P. Fairlie
DOI:10.1002/anie.201202149
日期:2012.8.6
Caught in a ‘SNAr'e: A one‐step, high‐yielding, catalyst‐free method is described for N‐arylation of azoles and indoles from unactivated monofluorobenzenes. This SNAr reaction tolerates a wide range of substituents and can also generate halogenated N‐aryl products. The reaction can also be performed simultaneously with or subsequent to a copper‐ or palladium‐catalyzed cross‐coupling reaction in the
<i>N</i>-Arylation of Benzimidazole with Arylboronate, Boroxine and Boronic Acids. Acceleration with an Optimal Amount of Water
作者:Katsutoshi Nishiura、Yoshio Urawa、Shigeru Soda
DOI:10.1002/adsc.200404193
日期:2004.12
The coupling of benzimidazole 1 with arylboronate, boroxine, and boronicacids is accelerated efficiently by the addition of an optimalamount of water. This coupling reaction proceeds in nearly quantitative yield at 30 °C under an atmosphere of air within 24 hours. Under these conditions, the reaction tolerates both electron-donating and electron-withdrawing substituents at the ortho-, meta, or para-positions