Transesterification of Cyclic Carbonates to Dimethyl Carbonate Using Solid Oxide Catalyst at Ambient Conditions: Environmentally Benign Synthesis

ChemSusChem ◽  
2010 ◽  
Vol 3 (5) ◽  
pp. 575-578 ◽  
Author(s):  
Meenakshisundaram Sankar ◽  
Srikanth Satav ◽  
Palanichamy Manikandan
Keyword(s):  
Oxide Catalyst ◽  
Dimethyl Carbonate ◽  
Solid Oxide ◽  
Environmentally Benign ◽  
Cyclic Carbonates ◽  
Ambient Conditions ◽  
Benign Synthesis

scholarly journals ChCl: Gly (DESs) Promote Environmentally Benign Synthesis of Xanthene Derivatives and Their Antitubercular Activity

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3667
Author(s):  
Mashooq A. Bhat ◽  
Ahmed M. Naglah ◽  
Siddique Akber Ansari ◽  
Hanaa M. Al-Tuwajiria ◽  
Abdullah Al-Dhfyan
Keyword(s):  
Reaction Times ◽  
Antitubercular Activity ◽  
Antimycobacterial Activity ◽  
Environmentally Benign ◽  
Reaction Yield ◽  
Benign Synthesis ◽  
Xanthene Derivatives ◽  
Wide Range ◽  
Major Application

A ChCl: Gly (DESs) promoted environmentally benign method was developed for the first time using the reaction of aryl aldehydes and dimedone to give excellent yields of xanthene analogues. The major application of this present protocol is the use of green solvent, a wide range of substrate, short reaction times, ease of recovery, the recyclability of the catalyst, high reaction yield, and ChCl: Gly as an alternative catalyst and solvent. In addition to this, all the synthesized compounds were evaluated for their in vitro antimycobacterial activity against M. tuberculosis H37Ra (MTB) and M. bovis BCG strains. The compounds 3d, 3e, 3f, and 3j showed significant antitubercular activity against MTB and M. bovis strains with minimum inhibitory concentration (MIC) values of 2.5−15.10 µg/mL and 0.26–14.92 µg/mL, respectively. The compounds 3e, 3f, and 3j were found to be nontoxic against MCF-7, A549, HCT 116, and THP-1 cell lines. All the prepared compounds were confirmed by 1H NMR and 13C NMR analysis.

An efficient robust fluorite CeZrO4−δ oxide catalyst for the eco-benign synthesis of styrene

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3619-3626 ◽  
Author(s):  
Kaliyappan Periyasamy ◽  
Venugopalan T. Aswathy ◽  
Venugopal Ashok kumar ◽  
Marimuthu Manikandan ◽  
Rakesh Shukla ◽  
...  
Keyword(s):  
Oxidative Dehydrogenation ◽  
Oxide Catalyst ◽  
Ethyl Benzene ◽  
Reaction Conditions ◽  
Catalytic Activities ◽  
Benign Synthesis

The catalytic activities of CeO2, ZrO2, (PH)-CeO2/ZrO2 and fluorite CeZrO4−δ oxides were reported for the oxidative dehydrogenation of ethyl benzene to styrene using O2, air and CO2 as oxidants. CeZrO4−δ accounted for a 47% styrene yield under optimized reaction conditions.

scholarly journals Recent advances in the electrochemical construction of heterocycles

2014 ◽  
Vol 10 ◽  
pp. 2858-2873 ◽  
Author(s):  
Robert Francke
Keyword(s):  
Heterocyclic Compounds ◽  
Elevated Temperatures ◽  
Ring Formation ◽  
Environmentally Benign ◽  
Heterocyclic Chemistry ◽  
Ambient Conditions ◽  
Recent Developments ◽  
Strong Acids ◽  
Selection Of ◽  
Made In

Due to the fact that the major portion of pharmaceuticals and agrochemicals contains heterocyclic units and since the overall number of commercially used heterocyclic compounds is steadily growing, heterocyclic chemistry remains in the focus of the synthetic community. Enormous efforts have been made in the last decades in order to render the production of such compounds more selective and efficient. However, most of the conventional methods for the construction of heterocyclic cores still involve the use of strong acids or bases, the operation at elevated temperatures and/or the use of expensive catalysts and reagents. In this regard, electrosynthesis can provide a milder and more environmentally benign alternative. In fact, numerous examples for the electrochemical construction of heterocycles have been reported in recent years. These cases demonstrate that ring formation can be achieved efficiently under ambient conditions without the use of additional reagents. In order to account for the recent developments in this field, a selection of representative reactions is presented and discussed in this review.

scholarly journals Environmentally Benign Synthesis of Tetra-Substituted Imidazoles through 4-Components Strategy Mediated by (S)-3-Methyl-1, 1-Diphenylbutane-1, 2-Diamine

2018 ◽  
Vol 10 (1) ◽  
pp. 39-50
Author(s):  
M. Rana ◽  
A. Rahman ◽  
P. K. Roy ◽  
H. N. Roy
Keyword(s):  
Cost Effectiveness ◽  
Environmentally Benign ◽  
One Pot ◽  
Benign Synthesis

(S)-3-Methyl-1, 1-diphenylbutane-1, 2-diamine has been found to be a mild and effective organocatalyst for one-pot 4-components synthesis of 1, 2, 4, 5-tetra-substituted imidazoles. The key benefits of this protocol is high yielding, cost effectiveness, easy purification and above all, environmentally benign.

scholarly journals Environmentally benign synthesis of CuInS2/ZnO heteronanorods: visible light activated photocatalysis of organic pollutant/bacteria and study of its mechanism

2017 ◽  
Vol 16 (12) ◽  
pp. 1792-1800 ◽  
Author(s):  
Minki Baek ◽  
Eun-Ju Kim ◽  
Seok Won Hong ◽  
Wooyul Kim ◽  
Kijung Yong
Keyword(s):  
Visible Light ◽  
Organic Pollutant ◽  
Organic Dye ◽  
Environmentally Benign ◽  
Controlled Experiments ◽  
Photocatalytic Mechanism ◽  
Benign Synthesis

CuInS2(CIS)/ZnO is a superb photocatalyst for organic dye and bacteria decomposition. In this paper, photocatalytic mechanism of the heterostructure is investigated through controlled experiments under various scavenging conditions.

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