Thiourea–Quaternary Ammonium Salt Catalyzed Asymmetric 1, 3-Dipolar Cycloaddition of Imino Esters To Construct Spiro[pyrrolidin-3,3′-oxindoles]

2016 ◽  
Vol 18 (19) ◽  
pp. 4774-4777 ◽  
Author(s):  
Jia-Xing Zhang ◽  
Hong-Yu Wang ◽  
Qiao-Wen Jin ◽  
Chang-Wu Zheng ◽  
Gang Zhao ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Dipolar Cycloaddition ◽  
Imino Esters

Highly enantioselective 1,3-dipolar cycloaddition of imino esters with benzofuranone derivatives catalyzed by thiourea−quaternary ammonium salt

Tetrahedron ◽  
2018 ◽  
Vol 74 (52) ◽  
pp. 7485-7494 ◽  
Author(s):  
Ting Du ◽  
Zhaokun Li ◽  
Changwu Zheng ◽  
Guosheng Fang ◽  
Longhui Yu ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Dipolar Cycloaddition ◽  
Imino Esters

Indolizine quaternary ammonium salt inhibitors, part III: insights into the highly effective low-toxicity acid corrosion inhibitor – synthesis and protection performance

2019 ◽  
Vol 43 (47) ◽  
pp. 18461-18475 ◽  
Author(s):  
Zhen Yang ◽  
Yefei Wang ◽  
Fengtao Zhan ◽  
Wuhua Chen ◽  
Mingchen Ding ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Acid Corrosion ◽  
Propargyl Alcohol ◽  
High Yield ◽  
Dipolar Cycloaddition ◽  
Acid Corrosion Inhibitor ◽  
Low Toxicity

Three indolizine derivatives (Di-BQC, QM-DiBQC, PyM-DiBQC) were prepared facilely in high yield via 1,3-dipolar cycloaddition. These compounds exhibit good inhibition for steel in concentrated acid without the synergism of propargyl alcohol (PA).

Catalyst- and oxidant-free electrochemical para-selective hydroxylation of N-arylamides in batch and continuous-flow

2020 ◽  
Vol 22 (19) ◽  
pp. 6437-6443
Author(s):  
Cheng-Kou Liu ◽  
Meng-Yi Chen ◽  
Xin-Xin Lin ◽  
Zheng Fang ◽  
Kai Guo
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Continuous Flow ◽  
Quaternary Ammonium Salt ◽  
Selective Hydroxylation

A catalyst-, oxidant-, acidic solvent- and quaternary ammonium salt-free electrochemical para-selective hydroxylation of N-arylamides at rt in batch and continuous-flow was developed.

Synthesis and Performance of Polyoxy-ethylene Ester Quaternary Ammonium Salt

2013 ◽  
Vol 50 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Yong-Qiang Sun ◽  
Wen-Jing Li ◽  
Wan-Xu Wang ◽  
Qiu-Xiao Li ◽  
Wieslaw Hreczuch ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
And Performance

Instability of Solutions of Quaternary Ammonium Permanganates in Dichloromethane

1997 ◽  
Vol 62 (6) ◽  
pp. 849-854 ◽  
Author(s):  
Vladislav Holba ◽  
Renata Košická
Keyword(s):  
Ammonium Salt ◽  
Rate Constants ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Activation Parameters ◽  
The Stability

The paper deals with instability of solutions of quaternary ammonium permanganates, QMnO4 (Q = tetraethyl-, tetra-1-propyl-, tetra-1-butyl-, tetra-1-pentyl-, tetra-1-octyl-, and cetyltrimethylammonium), in dichloromethane and presents the rate constants and activation parameters of the reduction of permanganate. Attention was paid to the properties of colloidal Mn(IV) intermediate. The stability of the solutions depends markedly on the quaternary ammonium salt used.

Systematic exploration of quaternary ammonium salt adsorption on oxidized coal based on experiments and MD simulations

Fuel ◽  
2021 ◽  
Vol 287 ◽  
pp. 119434
Author(s):  
Jun Chen ◽  
Hongliang Li ◽  
Chunfu Liu ◽  
Lingyun Liu ◽  
Yu Sun ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Md Simulations ◽  
Oxidized Coal ◽  
Systematic Exploration

scholarly journals Antibacterial performance of polymer quaternary ammonium salt–capped silver nanoparticles on Bacillus subtilis in water

RSC Advances ◽  
2019 ◽  
Vol 9 (44) ◽  
pp. 25667-25676 ◽  
Author(s):  
Jingyu Wang ◽  
Minghao Sui ◽  
Zhanfang Ma ◽  
Hongwei Li ◽  
Bojie Yuan
Keyword(s):  
Silver Nanoparticles ◽  
Bacillus Subtilis ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Antibacterial Performance ◽  
Antibacterial Capacity

Polymer quaternary ammonium salt–capped silver nanoparticles (PQAS–AgNPs) were synthesized, and they exhibited significant antibacterial capacity against Bacillus subtilis.

Synthesis and Applications of Tri-Quaternary Ammonium Salt Gemini Surfactant

2013 ◽  
Vol 34 (1) ◽  
pp. 106-110 ◽  
Author(s):  
Xiongjun Wu ◽  
Lin Zhao ◽  
Xiaojun Wang ◽  
Jinjie Wang ◽  
Yuli Zhang
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Gemini Surfactant

Antibacterial activity of quaternary ammonium salt grafted cotton

2007 ◽  
Vol 98 (3) ◽  
pp. 209-218 ◽  
Author(s):  
N. Ladhari ◽  
M. H. V. Baouab ◽  
Abdelbasset Ben Dekhil ◽  
Amina Bakhrouf ◽  
P. Niquette
Keyword(s):  
Antibacterial Activity ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt
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