Cross-Coupling Reactions of Aryl Halides with Amines, Phenols, and Thiols Catalyzed by an N,N′-Dioxide-Copper(I) Catalytic System
作者:Haitao Yang、Chao Xi、Zhiwei Miao、Ruyu Chen
DOI:10.1002/ejoc.201100274
日期:2011.6
reactions of various N, O, and S nucleophilic reagents with aryl halides have been successfully carried out under mild conditions by using a novel chiral N,N′-dioxide–copper(I) catalytic system as the catalyst. This versatile and efficient catalyst system has been demonstrated to facilitate the cross-coupling reactions of aryl halides with amines,phenols, and thiols to afford the corresponding desired
通过使用新型手性 N,N'-二氧化物-铜 (I) 催化体系作为催化剂,各种 N、O 和 S 亲核试剂与芳基卤化物的偶联反应已在温和条件下成功进行。这种多功能且高效的催化剂体系已被证明可促进芳基卤化物与胺、酚和硫醇的交叉偶联反应,从而以良好至极好的收率提供相应的所需产物。
3-(Diphenylphosphino)propanoic acid: An efficient ligand for the Cu-catalyzed N-arylation of imidazoles and 1H-pyrazole with aryl halides
作者:Ya-Shuai Liu、Yan Liu、Xiao-Wei Ma、Ping Liu、Jian-Wei Xie、Bin Dai
DOI:10.1016/j.cclet.2014.01.042
日期:2014.5
Abstract 3-(Diphenylphosphino)propanoic acid ( L2 ) has proved to be an efficientligand for the copper-catalyzed C N coupling reactions. N -arylation of imidazoles with aryl iodides catalyzed by CuCl/ L2 was smoothly carried out in DMSO at 100 °C with a yield up to 98%. N -arylation of 1 H -pyrazole with aryl iodides and bromides catalyzed by Cu(OAc) 2 / L2 in 1,4-dioxane also gave the corresponding
Unique copper–salen complex: an efficient catalyst for N-arylations of anilines and imidazoles at room temperature
作者:Ankur Gogoi、Gayatri Sarmah、Anindita Dewan、Utpal Bora
DOI:10.1016/j.tetlet.2013.10.084
日期:2014.1
activity of a unique Cu–salen type complex in N-arylation of anilines with arylboronic acids in water. The protocol is found to be applicable for a wide range of electronically diversified arylboronic acids and anilines with excellent yields of the isolated product. Further the scope of this protocol has been extended to the synthesis of various N-aryl imidazoles in iso-propanol.
Carbothioamide as Highly Efficient Ligand for Copper-catalyzed Room Temperature Chan-Lam Cross-Coupling Reaction
作者:Jayantajit Baruah、Kongkona Gogoi、Anindita Dewan、Geetika Borah、Utpal Bora
DOI:10.1002/bkcs.11248
日期:2017.10
The catalytic activity of three N,S‐donor ligands, viz L1 [2‐(4‐methoxybenzylidene)‐N‐phenylhydrazinecarbothioamide], L2 [2,2′‐(1,2‐diphenylethane‐1,2‐diylidene)bis(hydrazinecarbothioamide)] and L3 [2‐(4‐methoxybenzylidene)hydrazinecarbothioamide] has been reported for N‐arylation of imidazoles with arylboronicacids in ethanol at room temperature. The method was found to be applicable in N‐arylation
Domino <i>N</i>-/<i>C</i>- or <i>N</i>-/<i>N</i>-/<i>C</i>-arylation of imidazoles to yield polyaryl imidazolium salts <i>via</i> atom-economical use of diaryliodonium salts
作者:Shiqing Li、Hongxu Lv、Yu Yu、Xiuqing Ye、Baisong Li、Songming Yang、Yanru Mo、Xiangfei Kong
DOI:10.1039/c9cc05237b
日期:——
Herein, we disclose a Cu-mediated domino di-/triarylation reaction of imidazoles to efficiently access polyaryl imidazolium salts in a single step by using two aryls as well as an anion of a diaryliodonium salt. The diarylation shows high atom economy and excellent selectivity with unsymmetrical iodonium salts.