scholarly journals Efficient and green synthesis of bis(indolyl)methanes catalyzed by ABS in aqueous media under ultrasound irradiation

2011 ◽  
Vol 18 (1) ◽  
pp. 412-414 ◽  
Author(s):  
Ji-Tai Li ◽  
Ming-Xuan Sun ◽  
Gen-Ye He ◽  
Xiao-Ya Xu
Keyword(s):  
Green Synthesis ◽  
Aqueous Media ◽  
Ultrasound Irradiation

Green synthesis of five- and six-membered N-heterocycles by ultrasonic irradiation in aqueous media

2021 ◽  
Vol 08 ◽  
Author(s):  
Thais Cristina Mendonça Nogueiraa ◽  
Marcus Vinicius Nora de Souza
Keyword(s):  
Green Chemistry ◽  
Green Synthesis ◽  
Ultrasonic Irradiation ◽  
Heterocyclic Compounds ◽  
Aqueous Media ◽  
Ultrasound Irradiation ◽  
New Drugs ◽  
Environmentally Benign ◽  
Water Conditions ◽  
Synthetic Methodologies

: Five- and six-membered N-heterocyclic compounds play an important role in medicinal chemistry and in the development of new drugs. In this manner, there is a constant demand for the development of novel biologically potent compounds and there is also an increasing pressure to develop alternative and more sustainable synthetic methodologies following the Green Chemistry principles. Thus, the present review aims to compile the latest progress in the use of ultrasound irradiation in water conditions to mediate the synthesis of five- and six-membered N-heterocyclic compounds in an environmentally benign manner.

Facile one-pot green synthesis of tetrahydrobiphenylene-1,3-dicarbonitriles in aqueous media under ultrasound irradiation

2016 ◽  
Vol 42 (12) ◽  
pp. 8097-8108 ◽  
Author(s):  
Nhlanhla Gracious Shabalala ◽  
Suresh Maddila ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Green Synthesis ◽  
Aqueous Media ◽  
Ultrasound Irradiation ◽  
One Pot

Green Synthesis and Spectroscopic Studies of Ag-rGO Nanocomposites for Highly Selective Mercury (II) Sensing

2018 ◽  
Vol 9 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Shubhangi J. Mane-Gavade ◽  
Sandip R. Sabale ◽  
Xiao-Ying Yu ◽  
Gurunath H. Nikam ◽  
Bhaskar V. Tamhankar
Keyword(s):  
Green Synthesis ◽  
Color Change ◽  
Limit Of Detection ◽  
Aqueous Media ◽  
Suitable Condition ◽  
Cost Effective ◽  
Spectroscopic Studies ◽  
Calibration Plot ◽  
First Time

Introduction: Herein we report the green synthesis and characterization of silverreduced graphene oxide nanocomposites (Ag-rGO) using Acacia nilotica gum for the first time. Experimental: We demonstrate the Hg2+ ions sensing ability of the Ag-rGO nanocomposites form aqueous medium. The developed colorimetric sensor method is simple, fast and selective for the detection of Hg2+ ions in aqueous media in presence of other associated ions. A significant color change was noticed with naked eye upon Hg2+ addition. The color change was not observed for cations including Sr2+, Ni2+, Cd2+, Pb2+, Mg2+, Ca2+, Fe2+, Ba2+ and Mn2+indicating that only Hg2+ shows a strong interaction with Ag-rGO nanocomposites. Under the most suitable condition, the calibration plot (A0-A) against concentration of Hg2+ was linear in the range of 0.1-1.0 ppm with a correlation coefficient (R2) value 0.9998. Results & Conclusion The concentration of Hg2+ was quantitatively determined with the Limit of Detection (LOD) of 0.85 ppm. Also, this method shows excellent selectivity towards Hg2+ over nine other cations tested. Moreover, the method offers a new cost effective, rapid and simple approach for the detection of Hg2+ in water samples.

scholarly journals Green synthesis of crystalline bismuth nanoparticles using lemon juice

RSC Advances ◽  
2021 ◽  
Vol 11 (43) ◽  
pp. 26683-26686
Author(s):  
Md. Mahiuddin ◽  
Bungo Ochiai
Keyword(s):  
Green Synthesis ◽  
Aqueous Media ◽  
Cost Effective ◽  
Lemon Juice ◽  
Capping Agent ◽  
Bismuth Nanoparticles

Lemon juice effectively served as a reducing and capping agent for an easy, cost-effective, and green synthesis of crystalline bismuth nanoparticles (BiNPs) in basic aqueous media.

High-Performance Single-Atom Ni Catalyst Loaded Graphyne for H2O2 Green Synthesis in Aqueous Media

2021 ◽  
Author(s):  
Wei Zhang ◽  
Yi-jing Gao ◽  
Qiao-Jun Fang ◽  
Jin-kong Pan ◽  
Xin-Cheng Zhu ◽  
...  
Keyword(s):  
Green Synthesis ◽  
High Performance ◽  
Aqueous Media ◽  
Single Atom ◽  
Ni Catalyst

scholarly journals Alum Catalyzed Simple, Efficient, and Green Synthesis of 2-[3-Amino-5-methyl-5-(pyridin-3-yl)-1,5-dihydro-4H-1,2,4-triazol-4-yl]propanoic Acid Derivatives in Aqueous Media

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Harshita Sachdeva ◽  
Diksha Dwivedi ◽  
Rekha Saroj
Keyword(s):  
Amino Acids ◽  
Green Chemistry ◽  
Green Synthesis ◽  
Aqueous Media ◽  
Propanoic Acid ◽  
Ft Ir ◽  
C Nmr

Alum (KAl(SO4)2·12H2O) is an inexpensive, efficient, and nontoxic catalyst used for the synthesis of 2-[3-amino-5-methyl-5-(pyridin-3-yl)-1,5-dihydro-4H-1,2,4-triazol-4-yl]propanoic acid derivatives in aqueous media by the reaction of 3-acetyl pyridine(1), amino acids(2)/(6), and thiosemicarbazide(4)at 80°C. This methodology offers significant improvements for the synthesis of products with regards to the yield of products, simplicity in operation, and green aspects by avoiding toxic catalysts which uphold the motto of green chemistry. Synthesized compounds have been characterized by FT-IR,13C NMR, and1HNMR spectroscopy.

Catalyst-free, one-pot, four-component green synthesis of functionalized 1-(2-fluorophenyl)-1,4-dihydropyridines under ultrasound irradiation

2016 ◽  
Vol 40 (6) ◽  
pp. 5107-5112 ◽  
Author(s):  
Nhlanhla Shabalala ◽  
Suresh Maddila ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Green Synthesis ◽  
Ultrasonic Irradiation ◽  
Aqueous Ethanol ◽  
Ultrasound Irradiation ◽  
One Pot ◽  
Catalyst Free ◽  
New Compounds ◽  
Synthesis Protocol

A catalyst-free synthesis protocol for functionalized 1,4-dihydropyridines under ultrasonic irradiation in aqueous ethanol is reported with excellent yields. Eleven new compounds are synthesized using dimethylacetylenedicarboxylate, 2-fluoroaniline, malononitrile and various substituted aldehydes.

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