Thermoregulated Aqueous Biphasic Catalysis of Sonogashira Reactions

2015 ◽  
Vol 68 (10) ◽  
pp. 1614 ◽  
Author(s):  
Xiaohua Zhao ◽  
Xiang Liu ◽  
Ming Lu
Keyword(s):  
Catalytic System ◽  
Catalytic Reaction ◽  
High Efficiency ◽  
The Novel ◽  
Biphasic Catalysis ◽  
Co Catalyst ◽  
Highly Efficient ◽  
Water Based ◽  
Aqueous Biphasic ◽  
Sonogashira Reactions

A water-based thermoregulated system for Pd-catalyzed Sonogashira reactions is presented, which allows for not only a highly efficient homogeneous catalytic reaction, but also an easy separation/recovery of the catalyst. The novel catalytic system exhibits high efficiency and excellent reusability. In addition, the Sonogashira reactions are performed with Pd(OAc)2 without a copper co-catalyst.

Phosphine free SBA-15–EDTA–Pd highly active recyclable catalyst: synthesis characterization and application for Suzuki and Sonogashira reaction

2014 ◽  
Vol 4 (9) ◽  
pp. 2978-2989 ◽  
Author(s):  
Priti Sharma ◽  
A. P. Singh
Keyword(s):  
Heterogeneous Catalyst ◽  
Recyclable Catalyst ◽  
Sonogashira Reaction ◽  
Reaction Conditions ◽  
Co Catalyst ◽  
Catalyst Synthesis ◽  
Catalyst Free ◽  
Highly Efficient ◽  
Highly Active ◽  
Sonogashira Reactions

SBA-15–EDTA–Pd(11) was demonstrated to be a highly efficient and reusable heterogeneous catalyst for the Suzuki and Sonogashira reactions in phosphine and co-catalyst free reaction conditions.

A soluble porous organic polymer for highly efficient organic-aqueous biphasic catalysis and convenient reuse of catalysts

2019 ◽  
Vol 7 (25) ◽  
pp. 15048-15053 ◽  
Author(s):  
Hao-Xi Fu ◽  
Zhi-Hao Zhang ◽  
Wenhao Fan ◽  
Shuifeng Wang ◽  
Yan Liu ◽  
...  
Keyword(s):  
Reduction Reaction ◽  
Organic Polymer ◽  
Biphasic Catalysis ◽  
Porous Organic Polymer ◽  
Highly Efficient ◽  
Aqueous Biphasic

A novel soluble Azo-POP (named Azo-POP-7) was reported for the highly efficient organic-aqueous biphasic reduction reaction on 4-nitrophenol with good recyclability (12 cycles).

Highly Efficient Pd/Tetraphosphine Catalytic System for Copper-Free Sonogashira Reactions of Aryl Bromides with Terminal Alkynes

2012 ◽  
Vol 142 (5) ◽  
pp. 594-600 ◽  
Author(s):  
Tao Yi ◽  
Min Mo ◽  
Hai-Yan Fu ◽  
Rui-Xiang Li ◽  
Hua Chen ◽  
...  
Keyword(s):  
Catalytic System ◽  
Terminal Alkynes ◽  
Highly Efficient ◽  
Aryl Bromides ◽  
Sonogashira Reactions

scholarly journals Recent Advancements in Polythiophene-Based Materials and Their Biomedical, Geno Sensor and DNA Detection

2021 ◽  
Vol 22 (13) ◽  
pp. 6850
Author(s):  
Seyyed Mojtaba Mousavi ◽  
Seyyed Alireza Hashemi ◽  
Sonia Bahrani ◽  
Khadije Yousefi ◽  
Gity Behbudi ◽  
...  
Keyword(s):  
Biomedical Engineering ◽  
High Efficiency ◽  
Polymeric Materials ◽  
The Novel ◽  
Electrode Coating ◽  
Effective Response ◽  
Hiv Drugs ◽  
New Generation ◽  
New Compounds ◽  
Anti Hiv

In this review, the unique properties of intrinsically conducting polymer (ICP) in biomedical engineering fields are summarized. Polythiophene and its valuable derivatives are known as potent materials that can broadly be applied in biosensors, DNA, and gene delivery applications. Moreover, this material plays a basic role in curing and promoting anti-HIV drugs. Some of the thiophene’s derivatives were chosen for different experiments and investigations to study their behavior and effects while binding with different materials and establishing new compounds. Many methods were considered for electrode coating and the conversion of thiophene to different monomers to improve their functions and to use them for a new generation of novel medical usages. It is believed that polythiophenes and their derivatives can be used in the future as a substitute for many old-fashioned ways of creating chemical biosensors polymeric materials and also drugs with lower side effects yet having a more effective response. It can be noted that syncing biochemistry with biomedical engineering will lead to a new generation of science, especially one that involves high-efficiency polymers. Therefore, since polythiophene can be customized with many derivatives, some of the novel combinations are covered in this review.

scholarly journals A self-boosting microwave plasma strategy tuned by air pressure for the highly efficient and controllable surface modification of carbon

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9955-9963
Author(s):  
Yanjing Liu ◽  
Jiawei He ◽  
Bing Zhang ◽  
Huacheng Zhu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Carbon Fiber ◽  
High Efficiency ◽  
Microwave Plasma ◽  
Air Pressure ◽  
Air Plasma ◽  
Highly Efficient ◽  
Carbon Fiber Cloth

Microwave enabled air plasma was boosted by a carbon fiber cloth (CFC) and used for the high-efficiency surface modification of the CFC, yielding CFCs with tunable contents of oxygen and each O-containing group.

Unprecedentedly high efficiency for photocatalytic conversion of methane to methanol over Au–Pd/TiO2 – what is the role of each component in the system?

2021 ◽  
Author(s):  
Xiaojiao Cai ◽  
Siyuan Fang ◽  
Yun Hang Hu
Keyword(s):  
Methane Conversion ◽  
High Efficiency ◽  
Mild Conditions ◽  
Highly Efficient ◽  
System P ◽  
Conversion Of Methane

Direct and highly efficient methane conversion to methanol under mild conditions is achieved via photocatalysis over Au–Pd/TiO2.

scholarly journals A general approach to high-efficiency perovskite solar cells by any antisolvent

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Alexander D. Taylor ◽  
Qing Sun ◽  
Katelyn P. Goetz ◽  
Qingzhi An ◽  
Tim Schramm ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Microstructural Characterization ◽  
Application Rate ◽  
Perovskite Layer ◽  
Highly Efficient ◽  
Application Procedure ◽  
Wide Range

AbstractDeposition of perovskite films by antisolvent engineering is a highly common method employed in perovskite photovoltaics research. Herein, we report on a general method that allows for the fabrication of highly efficient perovskite solar cells by any antisolvent via manipulation of the antisolvent application rate. Through detailed structural, compositional, and microstructural characterization of perovskite layers fabricated by 14 different antisolvents, we identify two key factors that influence the quality of the perovskite layer: the solubility of the organic precursors in the antisolvent and its miscibility with the host solvent(s) of the perovskite precursor solution, which combine to produce rate-dependent behavior during the antisolvent application step. Leveraging this, we produce devices with power conversion efficiencies (PCEs) that exceed 21% using a wide range of antisolvents. Moreover, we demonstrate that employing the optimal antisolvent application procedure allows for highly efficient solar cells to be fabricated from a broad range of precursor stoichiometries.

scholarly journals Iridium Complex Catalyzed Hydrogen Production from Glucose and Various Monosaccharides

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 891
Author(s):  
Ken-ichi Fujita ◽  
Takayoshi Inoue ◽  
Toshiki Tanaka ◽  
Jaeyoung Jeong ◽  
Shohichi Furukawa ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Catalytic System ◽  
Catalytic Reaction ◽  
Hydrogen Gas ◽  
Water Soluble ◽  
Starting Material ◽  
Iridium Complex ◽  
Production Of Hydrogen ◽  
Bipyridine Ligand

A new catalytic system has been developed for hydrogen production from various monosaccharides, mainly glucose, as a starting material under reflux conditions in water in the presence of a water-soluble dicationic iridium complex bearing a functional bipyridine ligand. For example, the reaction of D-glucose in water under reflux for 20 h in the presence of [Cp*Ir(6,6′-dihydroxy-2,2′-bipyridine)(H2O)][OTf]2 (1.0 mol %) (Cp*: pentamethylcyclopentadienyl, OTf: trifluoromethanesulfonate) resulted in the production of hydrogen gas in 95% yield. In the present catalytic reaction, it was experimentally suggested that dehydrogenation of the alcoholic moiety at 1-position of glucose proceeded.

Indium-Catalyzed Direct Conversion of Lactones into Thiolactones and Selenolactones in the Presence of Elemental Sulfur and Selenium

Synthesis ◽  
2017 ◽  
Vol 50 (03) ◽  
pp. 565-574 ◽  
Author(s):  
Norio Sakai ◽  
Shuhei Horikawa ◽  
Yohei Ogiwara
Keyword(s):  
Catalytic System ◽  
Elemental Sulfur ◽  
Direct Conversion ◽  
The Novel ◽  
One Pot

The direct conversion of lactones into thiolactones with elemental sulfur (S8) catalyzed by InCl3/PhSiH3 in a one-pot reaction is described. This catalytic system was successfully applied to the novel preparation of selenolactones from lactones and selenium.

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