Efficient hybrid solar-to-alcohol system via synergistic catalysis between well-defined Cu–N4 sites and its sulfide (CuS)

2020 ◽  
Vol 392 ◽  
pp. 123799 ◽  
Author(s):  
Jun Cheng ◽  
Xiao Yang ◽  
XiaoXu Xuan ◽  
Junhu Zhou
Keyword(s):  
Synergistic Catalysis ◽  
Alcohol System

Regio-, Stereo- and Enantioselective α-Addition of Carbonyl Nucleo-philes to Allenamides Catalyzed by a Synergistic Copper/Enamine System

2020 ◽  
Author(s):  
Rémi Blieck ◽  
Sebastien Lemouzy ◽  
Marc Taillefer ◽  
Florian Monnier
Keyword(s):  
Catalytic System ◽  
Secondary Amine ◽  
Primary Amine ◽  
Synergistic Catalysis ◽  
Enantioselective Addition ◽  
Amine Catalysts

A dual copper/enamine catalytic system is found to enable an intermolecular enantioselective α-addition of various carbonyl nucleophiles to allenamides. Secondary amine catalysts allowed the highly enantioselective addition of aldehydes, while using primary amine catalysts led to the enantioselective addition of ketoester nucleophiles. The process was found to be highly regio-, stereo- and enantio-selective and represented the first allene hydrofunctionalization using an synergistic catalysis involving copper

Isothermal and isobaric vapour-liquid equilibrium data in the tetrachloromethane-sec-butyl alcohol system

1983 ◽  
Vol 48 (9) ◽  
pp. 2446-2453 ◽  
Author(s):  
Jan Linek
Keyword(s):  
Experimental Data ◽  
Boiling Point ◽  
Butyl Alcohol ◽  
Correlation Equations ◽  
Wilson Equation ◽  
Liquid Equilibrium ◽  
Raoult’S Law ◽  
System A ◽  
Equilibrium Data ◽  
Alcohol System

Isothermal vapour-liquid equilibrium data at 65, 73 and 80 °C and isobaric ones at 101.3 kPa were measured in the tetrachloromethane-sec-butyl alcohol system. A modified circulation still of the Gillespie type was used for the measurements. Under the conditions of measurement, the system exhibits positive deviations from Raoult's law and minimum boiling-point azeotropes. The experimental data were fitted to a number of correlation equations, the most suitable being the Wilson equation.

High efficiency reduction of CO2 to CO and CH4 via photothermal synergistic catalysis of lead-free perovskite Cs3Sb2I9

2021 ◽  
Vol 294 ◽  
pp. 120236
Author(s):  
Yingying Wang ◽  
Qixin Zhou ◽  
Yongfa Zhu ◽  
Dongsheng Xu
Keyword(s):  
High Efficiency ◽  
Lead Free ◽  
Synergistic Catalysis ◽  
Reduction Of Co2

Diols Activation via Cu/Borinic Acids Synergistic Catalysis in Atroposelective Ring‐Opening of Cyclic Diaryliodoniums

2020 ◽  
Author(s):  
Zhenhua Gu ◽  
Kun Zhao ◽  
Shan Yang ◽  
Qi Gong ◽  
Longhui Duan
Keyword(s):  
Ring Opening ◽  
Synergistic Catalysis

Oxidative and Redox‐Neutral Approaches to Symmetrical Diamines and Diols by Single Electron Transfer/Hydrogen Atom Transfer Synergistic Catalysis

2020 ◽  
Vol 2020 (46) ◽  
pp. 7151-7155 ◽  
Author(s):  
Masashi Fujita ◽  
Fumihisa Kobayashi ◽  
Takafumi Ide ◽  
Hiromichi Egami ◽  
Yoshitaka Hamashima
Keyword(s):  
Electron Transfer ◽  
Hydrogen Atom ◽  
Hydrogen Atom Transfer ◽  
Single Electron ◽  
Atom Transfer ◽  
Single Electron Transfer ◽  
Synergistic Catalysis

Synergistic Catalysis via Brønsted Acid Modulated Frustrated Lewis Pair‐Like Reaction in Carbodicarbene

2021 ◽  
Author(s):  
Tiow-Gan Ong ◽  
Yi-Chen Chan ◽  
Yuna Bai ◽  
Wen-Ching Chen ◽  
Hsing-Yin Chen ◽  
...  
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Synergistic Catalysis ◽  
Frustrated Lewis Pair ◽  
Brönsted Acid

scholarly journals Site-specific Umpolung amidation of carboxylic acids via triplet synergistic catalysis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yunyun Ning ◽  
Shuaishuai Wang ◽  
Muzi Li ◽  
Jie Han ◽  
Chengjian Zhu ◽  
...  
Keyword(s):  
Carboxylic Acids ◽  
Functional Group ◽  
Amide Bond ◽  
Coupling Reagents ◽  
Complex Molecules ◽  
Bond Forming ◽  
Synergistic Catalysis ◽  
Wide Range ◽  
Amidation Reaction ◽  
Forming Methods

AbstractDevelopment of catalytic amide bond-forming methods is important because they could potentially address the existing limitations of classical methods using superstoichiometric activating reagents. In this paper, we disclose an Umpolung amidation reaction of carboxylic acids with nitroarenes and nitroalkanes enabled by the triplet synergistic catalysis of FeI2, P(V)/P(III) and photoredox catalysis, which avoids the production of byproducts from stoichiometric coupling reagents. A wide range of carboxylic acids, including aliphatic, aromatic and alkenyl acids participate smoothly in such reactions, generating structurally diverse amides in good yields (86 examples, up to 97% yield). This Umpolung amidation strategy opens a method to address challenging regioselectivity issues between nucleophilic functional groups, and complements the functional group compatibility of the classical amidation protocols. The synthetic robustness of the reaction is demonstrated by late-stage modification of complex molecules and gram-scale applications.

Synergistic catalysis of BiOIO3 catalyst for elimination of organic pollutants under simultaneous photo-irradiation and ultrasound-vibration treatment

2021 ◽  
Author(s):  
Jiayao Chen ◽  
Hua Lei ◽  
Shilong Ji ◽  
Meixuan Wu ◽  
Baocheng Zhou ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Vibration Treatment ◽  
Synergistic Catalysis

Various Applications of Silver Nano-Particles by Ultrasonic Eco-Fabrication

2005 ◽  
Vol 486-487 ◽  
pp. 530-533 ◽  
Author(s):  
Yamato Hayashi ◽  
Hirotsugu Takizawa ◽  
Yoshitaka Saijo ◽  
Tohru Sekino ◽  
Katsuaki Suganuma ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Noble Metal ◽  
Room Temperature ◽  
Silver Oxide ◽  
Nano Particles ◽  
Metal Particles ◽  
Noble Metal Oxides ◽  
Alcohol System ◽  
Silver Metal ◽  
Suitable Process

Applications of silver nano-sized metal particles were investigated for a new, ecologically friendly and economical liquid-solid (silver oxide-alcohol) system. Silver metal oxides as starting materials have merits in metal particles fabrication because these materials are decomposed only by heating in air. That is, noble metal oxide does not use thestrong reduction atmosphere. This reduction is ecologically clean because many noble metal oxides are not toxic, and because O2 is evolved during decomposition. We reduced silver metal oxides by ultrasound and fabricated silver nano metal nanoparticles at room temperature, and various applications were investigated. By choosing a suitable process and conditions, it is reasonable to expect that ultrasonic eco-fabrications can be extended to obtain various silver nano-particles containing materials.

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