An efficient one pot three-component nanocatalyzed synthesis of spiroheterocycles using TiO2 nanoparticles as a heterogeneous catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46415-46422 ◽  
Author(s):  
Yogesh Kumar Tailor ◽  
Sarita Khandelwal ◽  
Yogita Kumari ◽  
Kamlendra Awasthi ◽  
Mahendra Kumar
Keyword(s):  
Tio2 Nanoparticles ◽  
Heterogeneous Catalyst ◽  
Environmentally Benign ◽  
One Pot

An efficient, environmentally benign isocyanide-based domino protocol is presented for synthesizing spiroheterocycles with 2-amino benzothiazole/1,3,4-thiadiazole, cyclohexyl/tert-butyl isocyanides and isatines/cyclic carbonyls, catalyzed by recyclable nanocrystalline TiO2.

Catalytic application of SO42−/Fe–ZrO2nanoparticles synthesized by a urea hydrolysis method for environmentally benign one pot synthesis of 1,8-dioxodecahydroacridines

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86179-86190 ◽  
Author(s):  
Sagnika Pradhan ◽  
B. G. Mishra
Keyword(s):  
Heterogeneous Catalyst ◽  
Mixed Oxides ◽  
Urea Hydrolysis ◽  
Environmentally Benign ◽  
One Pot ◽  
Hydrolysis Method ◽  
One Pot Synthesis ◽  
Catalytic Application

A series of sulfate grafted Fe2O3–ZrO2mixed oxides (SFexZr) were prepared by urea hydrolysis method and studied as heterogeneous catalyst for synthesis of structurally diverse 1,8-dioxodecahydroacridines.

scholarly journals An Efficient One-Pot Green Protocol for the Synthesis of 5-Unsubstituted 3,4-Dihydropyrimidin-2(1H)-Ones Using Recyclable Amberlyst 15 DRY as a Heterogeneous Catalyst via Three-Component Biginelli-Like Reaction

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Srinivasa Rao Jetti ◽  
Divya Verma ◽  
Shubha Jain
Keyword(s):  
Heterogeneous Catalyst ◽  
Solid Acid ◽  
Environmentally Benign ◽  
Chemical Waste ◽  
One Pot ◽  
Efficient Catalyst ◽  
Amberlyst 15 ◽  
Green Protocol ◽  
Recyclable Heterogeneous Catalyst ◽  
Work Up

An environmentally benign green protocol for the synthesis of 5-unsubstituted 3,4-dihydropyrimidin-2(1H)-ones using Amberlyst 15 DRY as a recyclable catalyst has been developed. The use of resinous, nontoxic, thermally stable, and inexpensive Amberlyst 15 DRY, as a recyclable heterogeneous catalyst, makes the process simple with negligible chemical waste. Among the various solid acid catalysts Amberlyst 15 DRY was found to be the most efficient catalyst with regard to reaction time, yield, and ease of work-up procedure.

Copper-catalyzed one-pot synthesis of benzimidazole derivatives

2008 ◽  
Vol 86 (11) ◽  
pp. 1044-1051 ◽  
Author(s):  
Hashem Sharghi ◽  
Mona Hosseini-Sarvari ◽  
Fatemeh Moeini
Keyword(s):  
Heterogeneous Catalyst ◽  
Simple Procedure ◽  
Catalytic Reactions ◽  
Environmentally Benign ◽  
Benzimidazole Derivatives ◽  
Good Recovery ◽  
One Pot ◽  
Aryl Aldehydes ◽  
Mild Conditions ◽  
High Yields

A simple, efficient, and environmentally benign method has been developed for the synthesis of 2-substituted benzimidazoles through a one-pot reaction of phenylenediamines with aryl aldehydes in excellent isolated yields under mild conditions using Cu(II) complex as the selective, recyclable, and heterogeneous catalyst at ambient temperature. The Cu(II) complex as a heterogeneous catalyst can be reused in further catalytic reactions, and it was found that its activity remained largely unchanged for eight successive runs. No metal-complex leaching was observed after the consecutive catalytic reactions. The salient features of this method include mild conditions, high yields, simple procedure, and good recovery and reusability of the heterogeneous catalyst.Key words: benzimidazole, o-phenylenediamine, arylaldehydes, heterogeneous catalyst, N,N-bis (2-hydroxyphenyl)pyridine-2,6-dicarboxamide.

scholarly journals Scolecite as an efficient heterogeneous catalyst for the synthesis of 2,4,5-triarylimidazoles

2009 ◽  
Vol 7 (3) ◽  
pp. 550-554 ◽  
Author(s):  
Lakshman Gadekar ◽  
Shivshankar Mane ◽  
Santosh Katkar ◽  
Balasaheb Arbad ◽  
Machhindra Lande
Keyword(s):  
Heterogeneous Catalyst ◽  
Ammonium Acetate ◽  
Environmentally Benign ◽  
One Pot ◽  
Effective Catalyst ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
High Yields ◽  
Efficient Heterogeneous Catalyst

AbstractNatural scolecite has been found as an effective catalyst for the one-pot synthesis of 2,4,5-triarylimidazole derivatives via a three component reaction using benzil or benzoin, aldehydes and ammonium acetate. This method provides several advantages such as being environmentally benign, reusable, possessing high yields with increased variations of the substituents in the product and preparative simplicity.

Synthesis, Characterization and Application of N,N-Dimethyl-N-Sulfoethan Ammonium tetra-Chloro Aluminate: A Novel micro-Heterogeneous Cata-lyst for Synthesis of tri-Arylmethanes

2020 ◽  
Vol 17 ◽  
Author(s):  
Saeid Azimi ◽  
Niloofar Mohamadighader
Keyword(s):  
Ionic Liquid ◽  
Heterogeneous Catalyst ◽  
Mass Spectroscopy ◽  
Aromatic Aldehydes ◽  
Solid Catalyst ◽  
Sem Images ◽  
One Pot ◽  
Acidic Catalyst ◽  
Eds Analysis ◽  
Ft Ir

Abstract: A new solid catalyst was synthesized from an ionic liquid and heterogenised by changing anion reaction. The new heterogeneous acidic catalyst was characterized by SEM images, EDS analysis, AFM images, Ft-IR, HNMR, 13CNMR and Mass Spectroscopy. It was applied to synthesis of tri-arylmethanes throughout one-pot tri-component reactions among aromatic aldehydes, N,N-dimethylaniline and other carbonic nucleophiles such as anisole and indole. Hence, synthesis of convenient and inexpensive micro-heterogeneous catalyst was introduced, the efficiency of which was confirmed. Also, various useful products were synthesized throughout this simple and clean procedure.

scholarly journals Regioselective, one-pot, multi-component, green synthesis of substituted benzo[c]pyrazolo[2,7]naphthyridines

RSC Advances ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5938-5950 ◽  
Author(s):  
Abida Ashraf ◽  
Zahid Shafiq ◽  
Khalid Mahmood ◽  
Muhammad Yaqub ◽  
Waqar Rauf
Keyword(s):  
Green Synthesis ◽  
Environmentally Benign ◽  
One Pot

An efficient and environmentally benign synthetic protocol has been developed for the synthesis of benzo[c]pyrazolo[2,7]naphthyridine derivatives through regioselective multi-component “on-water” reaction of isatin, malononitrile and 3-aminopyrazole.

scholarly journals Stereoselective synthesis of spirocyclic pyrrolidines/pyrrolizidines/pyrrolothiazolidines using l-proline functionalized manganese ferrite nanorods as a novel heterogeneous catalyst

RSC Advances ◽  
2021 ◽  
Vol 11 (24) ◽  
pp. 14755-14768
Author(s):  
Malihe Akhavan ◽  
Ahmadreza Bekhradnia
Keyword(s):  
Heterogeneous Catalyst ◽  
Stereoselective Synthesis ◽  
Manganese Ferrite ◽  
One Pot ◽  
New Class

An efficient, green, one-pot, and three-component protocol has been reported for the stereoselective synthesis of a new class of spiro thiazolidines.

scholarly journals Ni–rGO–zeolite nanocomposite: An efficient heterogeneous catalyst for one–pot synthesis of triazoles in water

2021 ◽  
Author(s):  
Prasun Choudhury ◽  
Shreyasi Chattopadhyay ◽  
Goutam De ◽  
Basudeb Basu
Keyword(s):  
Heterogeneous Catalyst ◽  
Y Zeolite ◽  
One Pot ◽  
Important Group ◽  
One Pot Synthesis ◽  
Nanocomposite Catalyst ◽  
Zeolite P ◽  
Efficient Heterogeneous Catalyst

An important group of pharmaceutical material, 1,2,3-triazoles has been synthesised using a Ni-based nanocomposite catalyst (Ni–rGO–zeolite) through azide alkyne cycloaddition (NiAAC). First, GO-zeolite hybrid was prepared through protonation of Na-Y-zeolite...

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