Biomass-derived Cu/porous carbon for the electrocatalytic synthesis of cyclic carbonates from CO2 and diols under mild conditions

2020 ◽  
Vol 44 (27) ◽  
pp. 11817-11823
Author(s):  
Jing-Jie Zhang ◽  
Shi-Ming Li ◽  
Yi Shi ◽  
Qiao-Li Hu ◽  
Huan Wang ◽  
...  
Keyword(s):  
Cathode Material ◽  
Porous Carbon ◽  
Room Temperature ◽  
Normal Pressure ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
Moderate Yield

A biomass-derived Cu/porous carbon (Cu/PC) cathode material was prepared and used for the electrocatalytic synthesis of cyclic carbonates from diols and CO2 with moderate yield at room temperature and normal pressure.

Construction of a bifunctional Zn(ii)–organic framework containing a basic amine functionality for selective capture and room temperature fixation of CO2

2020 ◽  
Vol 7 (1) ◽  
pp. 72-81 ◽  
Author(s):  
Rajesh Das ◽  
Sandeep Singh Dhankhar ◽  
C. M. Nagaraja
Keyword(s):  
Room Temperature ◽  
Solvent Free ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
Basic Amine ◽  
Organic Framework

The construction of a novel 3D, porous, bifunctional Zn(ii)–organic framework featuring two-types of 1D channels for efficient fixation of CO2 to cyclic carbonates under solvent-free mild conditions of RT is reported.

Anthozoan-like Porous Nanocages with Nano-Cobalt Armed CNTs Multifunctional Layer as Cathode Material for High-stable Na-S Battery

2022 ◽  
Author(s):  
Hui Liu ◽  
Yuanke Wu ◽  
Pan Liu ◽  
Han Wang ◽  
Mao-Wen Xu ◽  
...  
Keyword(s):  
Cathode Material ◽  
Porous Carbon ◽  
Volume Expansion ◽  
Room Temperature ◽  
Electronic Conductivity ◽  
Shuttle Effect ◽  
Nitrogen Doped ◽  
The Poor ◽  
Capacity Decay

The capacity decay of room-temperature Na-S batteries is mainly caused by the poor electronic conductivity, shuttle effect, and volume expansion of sulfur/polysulfides (NaPSs). Herein, anthozoan-like nitrogen-doped porous carbon nanocages with...

Enzyme-assisted Cyclization of Chalcones to Flavanones

2020 ◽  
Vol 17 (12) ◽  
pp. 926-931
Author(s):  
Mariana Macías Alonso ◽  
Carlos José Boluda ◽  
Gabriela Díaz Barajas ◽  
Nallely Caldera Sánchez ◽  
Iván Córdova-Guerrero ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Phosphate Buffer ◽  
Room Temperature ◽  
Coupling Constants ◽  
Chemical Methods ◽  
Relative Configuration ◽  
Simple Process ◽  
Mild Conditions ◽  
Reaction Proceeds ◽  
Moderate Yield

Enzyme catalyzed synthesis is an eco-friendly technique in organic synthesis, having several benefits over conventional methods. In the present work, we describe a simple process of laccase and chloroperoxidase assisted cyclization of chalcones, leading to the formation of flavanones. The reaction proceeds in a mixture of phosphate buffer and ethanol, under oxygen atmosphere at room temperature, yielding the corresponding flavanone in good to moderate yield. The relative configuration of the products at C2 is tentatively assigned as S*-flavanone based on the coupling constants with the methylenic protons H3α,β. In comparison to the chemical methods, we describe a process which can be achieved efficiently under mild conditions using oxygen as oxidant.

Metal β-diketonate complexes as highly efficient catalysts for chemical fixation of CO2 into cyclic carbonates under mild conditions

2019 ◽  
Vol 48 (42) ◽  
pp. 15970-15976 ◽  
Author(s):  
Hongmei Wang ◽  
Zulei Zhang ◽  
Hailong Wang ◽  
Liping Guo ◽  
Lei Li
Keyword(s):  
Room Temperature ◽  
Chemical Fixation ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
Highly Efficient

Metal β-diketonate complexes could efficiently catalyze the chemical fixation of CO2 at 1 atm and near room temperature.

SuFEx Activation with Ca(NTf2)2: A Unified Strategy to Access Sulfamides, Sulfamates and Sulfonamides from S(VI) Fluorides

2020 ◽  
Author(s):  
Subham Mahapatra ◽  
Cristian P. Woroch ◽  
Todd W. Butler ◽  
Sabrina N. Carneiro ◽  
Sabrina C. Kwan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Medicinal Chemistry ◽  
Mild Conditions ◽  
Broad Array

<p><br></p> <p>A method to activate sulfamoyl fluorides, fluorosulfates, and sulfonyl fluorides with calcium triflimide, and DABCO for SuFEx with amines is described. The reaction was applied to a diverse set of sulfamides, sulfamates, and sulfonamides at room temperature under mild conditions. Additionally, we highlight the application of this transformation to parallel medicinal chemistry to generate a broad array of nitrogen-based S(VI) compounds. </p>

SuFEx Activation with Ca(NTf2)2: A Unified Strategy to Access Sulfamides, Sulfamates and Sulfonamides from S(VI) Fluorides

2020 ◽  
Author(s):  
Subham Mahapatra ◽  
Cristian P. Woroch ◽  
Todd W. Butler ◽  
Sabrina N. Carneiro ◽  
Sabrina C. Kwan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Medicinal Chemistry ◽  
Mild Conditions ◽  
Broad Array

<p><br></p> <p>A method to activate sulfamoyl fluorides, fluorosulfates, and sulfonyl fluorides with calcium triflimide, and DABCO for SuFEx with amines is described. The reaction was applied to a diverse set of sulfamides, sulfamates, and sulfonamides at room temperature under mild conditions. Additionally, we highlight the application of this transformation to parallel medicinal chemistry to generate a broad array of nitrogen-based S(VI) compounds. </p>

One-step fabrication of Pd-embedded hierarchically porous carbon micro-spheres for formaldehyde removal under mild conditions

2021 ◽  
Author(s):  
Zhigang Ren ◽  
peng zhao ◽  
Ye Zhang ◽  
Yang Yu ◽  
xiaoxuan lv ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Microspheres ◽  
Carbon Spheres ◽  
Pickering Emulsions ◽  
Hierarchically Porous ◽  
Mild Conditions ◽  
Formaldehyde Removal ◽  
One Step

Micron-sized carbon spheres synthesized via pickering emulsions has attracted much attention in recent two years. In present paper, we prepared palladium (Pd) and nitrogen co-embedded carbon microspheres for formaldehyde (HCHO)...

scholarly journals Practical Synthesis of 2-Iodosobenzoic Acid (IBA) without Contamination by Hazardous 2-Iodoxybenzoic Acid (IBX) under Mild Conditions

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1897
Author(s):  
Hideyasu China ◽  
Nami Kageyama ◽  
Hotaka Yatabe ◽  
Naoko Takenaga ◽  
Toshifumi Dohi
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Practical Method ◽  
Hypervalent Iodine ◽  
Mild Conditions ◽  
Sequential Procedures ◽  
Iodine Compounds ◽  
Practical Synthesis ◽  
Iodosobenzoic Acid ◽  
Lower Temperature

We report a convenient and practical method for the preparation of nonexplosive cyclic hypervalent iodine(III) oxidants as efficient organocatalysts and reagents for various reactions using Oxone® in aqueous solution under mild conditions at room temperature. The thus obtained 2-iodosobenzoic acids (IBAs) could be used as precursors of other cyclic organoiodine(III) derivatives by the solvolytic derivatization of the hydroxy group under mild conditions of 80 °C or lower temperature. These sequential procedures are highly reliable to selectively afford cyclic hypervalent iodine compounds in excellent yields without contamination by hazardous pentavalent iodine(III) compound.

Organophotoredox-Catalyzed C–H Alkylation of Imidazoheterocycles with Malonates: Total Synthesis of Zolpidem

Synthesis ◽  
2020 ◽  
Author(s):  
Narendra R. Chaubey ◽  
Anant R. Kapdi ◽  
Biswanath Maity
Keyword(s):  
Total Synthesis ◽  
Room Temperature ◽  
Drug Molecule ◽  
Bond Functionalization ◽  
First Report ◽  
Mild Conditions ◽  
The Past ◽  
Hypnotic Drug ◽  
Free Environment

AbstractOrganophotocatalytic C–H bond functionalization has attracted a lot of attention in the past several years due to the possibility of catalyzing reactions in a metal- and peroxide-free environment. Continuing on these lines, an organophotoredox-catalyzed C–H functionalization of imidazo[1,2-a]pyridines and related heterocycles with bromomalonates under mild conditions is reported, providing excellent yields of the products at room temperature. This is the first report involving malonates as coupling partners leading to the synthesis of a range of functionalized products including total synthesis of zolpidem, a sedative­-hypnotic drug molecule.

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