Ligand-free Cu-catalyzed O-arylation of aliphatic diols

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 66104-66108 ◽  
Author(s):  
Yufen Zheng ◽  
Wenxing Zou ◽  
Laichun Luo ◽  
Jiabei Chen ◽  
Songwen Lin ◽  
...  
Keyword(s):  
Copper Catalyst ◽  
Scale Up ◽  
Coupling Reaction ◽  
Aryl Iodides ◽  
Ligand Free

Coupling reaction between aryl iodides with aliphatic diols was realized with a ligand-free copper catalyst. This method was successfully applied in the process of scale-up synthesis of medicinal candidate product EMB-3.

C–N cross-coupling reaction catalysed by reusable CuCr2O4 nanoparticles under ligand-free conditions: a highly efficient synthesis of triarylamines

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 28879-28884 ◽  
Author(s):  
Javad Safaei-Ghomi ◽  
Zeinab Akbarzadeh ◽  
Bahareh Khojastehbakht-Koopaei
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Aryl Iodides ◽  
Cross Coupling Reaction ◽  
Ligand Free

A convenient, efficient and ligand-free method for the C–N coupling reaction of anilines and aryl iodides was performed using CuCr2O4 nanoparticles.

ChemInform Abstract: Copper-Catalyzed Cross-Coupling Reaction of Thiols with Aryl Iodides under Ligand-Free Conditions.

ChemInform ◽  
2015 ◽  
Vol 46 (9) ◽  
pp. no-no
Author(s):  
Yu-Ting Huang ◽  
Wan-Ting Tsai ◽  
Satpal Singh Badsara ◽  
Chien-Ching Chan ◽  
Chin-Fa Lee
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Aryl Iodides ◽  
Cross Coupling Reaction ◽  
Ligand Free

Ligand-Free Copper-Catalyzed Cross-Coupling Reaction of Alkynes with Aryl Iodides and Vinyl Halides

Synlett ◽  
2013 ◽  
Vol 25 (03) ◽  
pp. 443-447 ◽  
Author(s):  
Chin-Fa Lee ◽  
Wan-Ting Tsai ◽  
Yun-Yung Lin ◽  
Yi-An Chen
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Vinyl Halides ◽  
Aryl Iodides ◽  
Cross Coupling Reaction ◽  
Ligand Free

scholarly journals Silica-copper catalyst interfaces enable carbon-carbon coupling towards ethylene electrosynthesis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jun Li ◽  
Adnan Ozden ◽  
Mingyu Wan ◽  
Yongfeng Hu ◽  
Fengwang Li ◽  
...  
Keyword(s):  
Active Sites ◽  
Density Functional ◽  
Copper Catalyst ◽  
Scale Up ◽  
Coupling Reaction ◽  
Density Functional Theory Calculations ◽  
Membrane Electrode Assembly ◽  
Membrane Electrode ◽  
One Pot ◽  
Sustained Operation

AbstractMembrane electrode assembly (MEA) electrolyzers offer a means to scale up CO2-to-ethylene electroconversion using renewable electricity and close the anthropogenic carbon cycle. To date, excessive CO2 coverage at the catalyst surface with limited active sites in MEA systems interferes with the carbon-carbon coupling reaction, diminishing ethylene production. With the aid of density functional theory calculations and spectroscopic analysis, here we report an oxide modulation strategy in which we introduce silica on Cu to create active Cu-SiOx interface sites, decreasing the formation energies of OCOH* and OCCOH*—key intermediates along the pathway to ethylene formation. We then synthesize the Cu-SiOx catalysts using one-pot coprecipitation and integrate the catalyst in a MEA electrolyzer. By tuning the CO2 concentration, the Cu-SiOx catalyst based MEA electrolyzer shows high ethylene Faradaic efficiencies of up to 65% at high ethylene current densities of up to 215 mA cm−2; and features sustained operation over 50 h.

Efficient Carboxylation of Terminal Alkynes with Carbon Dioxide Catalyzed by Ligand‐Free Copper Catalyst under Ambient Conditions

2019 ◽  
Vol 8 (8) ◽  
pp. 1501-1505 ◽  
Author(s):  
Wan‐Hui Wang ◽  
Lihong Jia ◽  
Xiujuan Feng ◽  
Dingqiao Fang ◽  
Hongyu Guo ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Copper Catalyst ◽  
Terminal Alkynes ◽  
Ambient Conditions ◽  
Ligand Free

Ligand-Free Copper Powder Catalyzed Direct Coupling Reaction of Heterocyclic C–H Bonds and Aryl Halides

Synthesis ◽  
2012 ◽  
Vol 44 (19) ◽  
pp. 3027-3032 ◽  
Author(s):  
Yu Yuan ◽  
Ying Han ◽  
Xiaohu Wang ◽  
Xiaowei Wang ◽  
Liangzhong Lv ◽  
...  
Keyword(s):  
Copper Powder ◽  
Coupling Reaction ◽  
Direct Coupling ◽  
Aryl Halides ◽  
Ligand Free

An Efficient Copper-Catalyzed Cross-Coupling Reaction of Thiols with Aryl Iodides

2011 ◽  
Vol 2011 (9) ◽  
pp. 1776-1781 ◽  
Author(s):  
Hsin-Lun Kao ◽  
Chin-Keng Chen ◽  
Yu-Jen Wang ◽  
Chin-Fa Lee
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Aryl Iodides ◽  
Cross Coupling Reaction
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