Green synthesis of Opuntia-derived carbon nanodots for the catalytic decolourization of cationic dyes

2020 ◽  
Vol 44 (46) ◽  
pp. 20001-20012
Author(s):  
Sabrina A. Beker ◽  
Adam Truskewycz ◽  
Ivan Cole ◽  
Andrew S. Ball
Keyword(s):  
Green Synthesis ◽  
Functional Groups ◽  
Cationic Dyes ◽  
Carbon Nanodots ◽  
Mild Conditions

Carbon nanodots, rich in functional groups and synthesised using green precursors, catalyse the decolourization of dyes under mild conditions.

Borates as a Traceless Activation Group for Intermolecular Alkylarylation of Ethylene through Photoredox/Nickel Dual Catalysis

Synlett ◽  
2020 ◽  
Author(s):  
Shengqing Zhu ◽  
Lingling Chu ◽  
Xiaoliang Feng ◽  
Lei Guo
Keyword(s):  
Functional Groups ◽  
Aryl Halides ◽  
Nickel Catalysis ◽  
Mild Conditions ◽  
Dual Catalysis

AbstractA formal ethylene alkylarylation reaction with aryl halides and alkyl oxalates enabled by synergistic photoredox/nickel catalysis is reported. This protocol takes advantage of borates as a traceless activation group, achieving the formal ethylene difunctionalized products via a catalytic three-component 1,2-alkylarylation of vinyl borate followed by a base-assisted deborylation process. The mild conditions allow for excellent functional groups compatibility and broad substrate scope.

Carbon nanodots, Ru nanodots and hybrid nanodots: preparation and catalytic properties

2015 ◽  
Vol 3 (29) ◽  
pp. 15074-15081 ◽  
Author(s):  
Abhijit Biswas ◽  
Subir Paul ◽  
Arindam Banerjee
Keyword(s):  
Catalytic Activity ◽  
Functional Groups ◽  
Catalytic Properties ◽  
Carbon Nanodots ◽  
Organic Azide

Peptide functionalized carbon nanodot supported Ru nanodots have been synthesized, which show a remarkable and reusable catalytic activity for the transformation of organic azide to the corresponding amine in the presence of other functional groups in water.

Consecutive Multicomponent Reactions: Synthesis of 3-Acyl-4-alkynyl-Substituted 1,3-Thiazolidines

Synthesis ◽  
2018 ◽  
Vol 50 (05) ◽  
pp. 1123-1132 ◽  
Author(s):  
Jürgen Martens ◽  
Torben Schlüter ◽  
Nils Frerichs ◽  
Marc Schmidtmann
Keyword(s):  
Functional Groups ◽  
Multicomponent Reactions ◽  
Terminal Alkynes ◽  
Synthetic Route ◽  
Acyl Chlorides ◽  
Mild Conditions ◽  
Three Component Reaction

This work describes the synthesis of compounds containing thiazolidine and propargylamidic motifs. Their preparation follows a synthetic route containing two multicomponent reactions. First, the Asinger four-component reaction is used to prepare 3-thiazolines and 3-oxazolines. Secondly, these heterocyclic imines are converted into propargylamides by a copper-catalyzed three-component reaction using acyl chlorides and terminal alkynes. The synthetic route is characterized by mild conditions and many functional groups are tolerated. The formation of an unexpected α-alkynoxyamide is also presented.

Study of Antioxidant Property of the Rhizome Extract of Polygonatum cirrhifolium (Mahameda) and its use in the green synthesis of Gold nanoparticles

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Braja Gopal Bag ◽  
Shib Shankar Dash ◽  
Anup Mandal
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Room Temperature ◽  
Chemical Constituents ◽  
Antioxidant Property ◽  
Dpph Radical ◽  
Mild Conditions ◽  
One Step ◽  
The One

The antioxidant efficacy of the rhizome extract of Polygonatum cirrhifolium (Mahameda) has been studied against a stable 2, 2-diphenylpicrylhydrazyl (DPPH) radical at room temperature. The chemical constituents present in the rhizome extract have been utilized for the one step synthesis of stable gold nanoparticles at room temperature under very mild conditions.

Green synthesis of plasmonic nanoparticles using Sargassum ilicifolium and application in photocatalytic degradation of cationic dyes

2022 ◽  
pp. 112642
Author(s):  
Thangavel Akkini Devi ◽  
Rajendran Muthukumar Sivaraman ◽  
Seth Sheeba Thavamani ◽  
Thomas Peter Amaladhas ◽  
Mohamad S. AlSalhi ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Photocatalytic Degradation ◽  
Cationic Dyes ◽  
Plasmonic Nanoparticles

Efficient Synthesis of 3,4-Disubstituted 7-Azaindoles Employing SEM as a Dual Protecting–Activating Group

Synlett ◽  
2019 ◽  
Vol 30 (20) ◽  
pp. 2273-2278 ◽  
Author(s):  
Piroska Gyárfás ◽  
János Gerencsér ◽  
Warren S. Wade ◽  
László Ürögdi ◽  
Zoltán Novák ◽  
...  
Keyword(s):  
Functional Groups ◽  
Efficient Method ◽  
Reaction Times ◽  
Nucleophilic Aromatic Substitution ◽  
Aromatic Substitution ◽  
Efficient Synthesis ◽  
Mild Conditions

An efficient method for nucleophilic aromatic substitution on 7-azaindoles has been developed. The reaction is facilitated by the unique dual influence of SEM as both protecting and activating group, permitting mild conditions and short reaction times that are compatible with sensitive functional groups. The method is suitable for the synthesis of a broad range of products, most notably ethers.

Gold-catalyzed cyclization of 1-(2′-azidoaryl) propynols: synthesis of polysubstituted 4-quinolones

2019 ◽  
Vol 55 (98) ◽  
pp. 14769-14772 ◽  
Author(s):  
Xiang Wu ◽  
Lang-Lang Zheng ◽  
Li-Ping Zhao ◽  
Cheng-Feng Zhu ◽  
You-Gui Li
Keyword(s):  
Functional Groups ◽  
Mild Conditions ◽  
Carbon Migration ◽  
Reaction Works

α-Imino gold carbene intermediate is produced from 1-(2′-azidoaryl) propynols, which triggers a 1,2-carbon migration and is converted to 2,3-disubstituted 4-quinolones. The reaction works under mild conditions and tolerates various functional groups.

Cerium(IV) Tetrabutylammonium Nitrate (CTAN): A Mild and Efficient N-dearylation Agent for Synthesis of N-unsubstituted 2-azetidinones

2017 ◽  
Vol 41 (4) ◽  
pp. 246-249 ◽  
Author(s):  
Maaroof Zarei
Keyword(s):  
Functional Groups ◽  
Room Temperature ◽  
Mild Conditions ◽  
Tetrabutylammonium Nitrate

A simple and efficient protocol for the conversion of N-p-methoxyphenyl, N-p-ethoxyphenyl, N-p-methoxynaphthyl, N-3,4-dimethoxybenzyl and N-p-methoxybenzyl-2-azetidinones to N-unsubstituted 2-azetidinones using cerium(IV) tetrabutylammonium nitrate (CTAN) in dichloromethane is described. The method is compatible with a number of functional groups, and N-unsubstituted 2-azetidinones can be prepared under mild conditions at room temperature. The reaction is rapid, and pure products are obtained in good yields.

Sign in / Sign up

Export Citation Format

Share Document