scholarly journals Dowex 50W: A Green Mild Reusable Catalyst for the Synthesis of 2-Aryl Benzoxazole Derivatives in Aqueous Medium

2021 ◽  
Vol 37 (2) ◽  
pp. 341-347
Author(s):  
Arup Datta
Keyword(s):  
Aqueous Medium ◽  
Heterogeneous Catalyst ◽  
Environmentally Friendly ◽  
High Yield ◽  
Reusable Catalyst ◽  
One Pot ◽  
Simple Process ◽  
Effective Catalyst ◽  
Rapid Reaction ◽  
Environmentally Friendly Method

In this work simple efficient, one pot and environmentally friendly method was developed for the synthesis of 2-Aryl-1H-benzoxazole derivatives at 80º C using ortho-aminophenol and various aldehydes. It has been found that Dowex50W is an effective catalyst to prepare moderate to high yield of a variety of benzoxazole derivatives through a clean and simple process. Aqueous medium, green methodology, rapid reaction, reusability of heterogeneous catalyst are the great advantages of this protocol.

ChemInform Abstract: Nanodomain Cubic Cuprous Oxide as Reusable Catalyst in One-Pot Synthesis of 3-Alkyl/Aryl-3- (pyrrole-2-yl/indole-3-yl)-2-phenyl-2,3-dihydro-isoindolinones in Aqueous Medium.

ChemInform ◽  
2014 ◽  
Vol 45 (41) ◽  
pp. no-no
Author(s):  
Swarbhanu Sarkar ◽  
Nivedita Chatterjee ◽  
Manas Roy ◽  
Rammyani Pal ◽  
Sabyasachi Sarkar ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Cuprous Oxide ◽  
Reusable Catalyst ◽  
One Pot ◽  
Alkyl Aryl ◽  
One Pot Synthesis

scholarly journals One-pot sequential synthesis and antifungal activity of 2-(benzylsulfonyl)benzothiazole derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29405-29413
Author(s):  
María Sol Ballari ◽  
Natividad Herrera Cano ◽  
Daniel A. Wunderlin ◽  
Gabriela E. Feresin ◽  
Ana N. Santiago
Keyword(s):  
Antifungal Activity ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
One Pot ◽  
Benzothiazole Derivatives ◽  
Environmentally Friendly Method

New antifungal agrochemicals, derived from 2-(benzylsulfonyl)benzothiazole were synthesized by an environmentally friendly method, using water as reaction medium.

Mild, efficient, and environmentally friendly synthesis of symmetrical N,N′-alkylidenebisamides under solvent-free conditions catalyzed by H7[(P2W17O61)FeIII(H2O)]

RSC Advances ◽  
2016 ◽  
Vol 6 (25) ◽  
pp. 20687-20694 ◽  
Author(s):  
R. Tayebee ◽  
B. Maleki ◽  
F. M. Zonoz ◽  
R. M. Kakhki ◽  
T. Kunani
Keyword(s):  
Environmentally Friendly ◽  
Solvent Free ◽  
One Pot ◽  
Effective Catalyst ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Noticeable Reduction ◽  
The One

H7[(P2W17O61)FeIII(H2O)] is introduced as an effective catalyst for the one-pot synthesis ofN,N′-alkylidenebisamides. The catalyst could be easily separated without noticeable reduction in activity.

A regioselective one-pot aza-Friedel–Crafts reaction for primary, secondary and tertiary anilines using a heterogeneous catalyst

2017 ◽  
Vol 19 (23) ◽  
pp. 5683-5690 ◽  
Author(s):  
Giovanna Bosica ◽  
Roderick Abdilla
Keyword(s):  
Heterogeneous Catalyst ◽  
Environmentally Friendly ◽  
Silicotungstic Acid ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Amberlyst 15

An environmentally friendly one-pot multicomponent synthesis of 3-substituted indoles, catalysed by silicotungstic acid on Amberlyst 15 under green, neat conditions.

scholarly journals One-Pot Three-Component Synthesis of 2-Amino-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile Derivatives Catalyzed by Cobalt Doped Iron (III) Tartrate Complex

2021 ◽  
Vol 11 (1) ◽  
pp. 3208-3217
Keyword(s):  
Microwave Irradiation ◽  
Environmentally Friendly ◽  
Water Soluble ◽  
Reusable Catalyst ◽  
Atom Economy ◽  
One Pot ◽  
Hydroxy Coumarin

An environmentally friendly one-pot three-component strategy synthesizing a series of 2-Amino-5-oxo-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile derivatives has been successfully performed in water. The products were obtained through conventional and microwave irradiation, which involving aldehyde, malononitrile, and 4-hydroxy coumarin, resulting in a green synthetic protocol with a high atom economy. The reaction was catalyzed by a water-soluble and reusable catalyst, i.e., cobalt doped iron (III) tartrate complex. The catalyst was recovered and efficiently reused.

A Suitable One-Pot Synthesis of 3,4-Dihydropyrano[3,2-c]Chromenes Using Magnetic Nanoparticles Tag: Piperidinium Benzene-1,3-Disulfonate Ionic Liquid as a Novel, Green, Efficient and Reusable Catalyst in Aqueous Medium

2017 ◽  
Vol 14 (6) ◽  
pp. 904-911 ◽  
Author(s):  
Ramin Ghorbani-Vaghei ◽  
Jafar Mahmoodi ◽  
Yaser Maghbooli ◽  
Azadeh Shahriari
Keyword(s):  
Ionic Liquid ◽  
Magnetic Nanoparticles ◽  
Reaction Times ◽  
Catalytic Amount ◽  
High Yield ◽  
Reusable Catalyst ◽  
One Pot ◽  
Efficient Catalyst ◽  
Water Solvent ◽  
The One

Background: The synthesis of 3,4-dihydropyrano[3,2-c]chromenes via the one-pot three-component reactions of various aldehydes, malononitrile, and 4-hydroxycumarin at 60 °C in water as a solvent by the magnetic nanoparticles tag: piperidinium benzene-1,3-disulfonate ionic liquid as a green and efficient catalyst. Some benefits of the presented technique are significant cost impact, impressive catalysis and the ability to reuse of the catalyst. The current procedure offers high yield, short reaction times, neat reaction and simple reusable catalyst. Objective: A magnetic nanoparticles tag: piperidinium benzene-1,3-disulfonate ionic liquid as a green, efficient, reusable and heterogeneous catalyst was used for the synthesis of 3,4-dihydropyrano[3,2-c]chromenes. Method: We have described an efficient and green process for the synthesis of the one-pot three-component synthesis of 3,4-dihydropyrano[3,2-c]chromenes from the reaction between 4-hydroxy-coumarin with malononitrile and aldehydes in the presence of catalytic amount of magnetic nanoparticles tag: piperidinium benzene-1,3-disulfonate ionic liquid as a novel and powerful nano ionic liquid with good to excellent yields and in a short reaction time in water solvent at 60 °C. Result: The main advantage of this process is the simplicity of the work-up and the products can be isolated without chromatography. Conclusion: We suggest that the method has also various additional advantages such as low loading of catalyst, clean reaction, which makes it a suitable and noteworthy approach for the synthesis of 3,4- dihydropyrano[3,2-c]chromenes.

scholarly journals Self-assembly of tetra(aniline) nanowires in acidic aqueous media with ultrasonic irradiation

2015 ◽  
Vol 3 (45) ◽  
pp. 11945-11952 ◽  
Author(s):  
Wei Lyu ◽  
Jiangtao Feng ◽  
Wei Yan ◽  
Charl FJ Faul
Keyword(s):  
Aqueous Medium ◽  
Ultrasonic Irradiation ◽  
Self Assembly ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
The Self ◽  
Environmentally Friendly Method

An environmentally friendly method is developed to explore the self-assembly of Ph/NH2-capped tetra(aniline) nanowires in acidic aqueous medium with ultrasonic irradiation.

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