Metal free synthesis of tetrahydrobenzo[a]xanthenes using orange peel as a natural and low cost efficient heterogeneous catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87082-87087 ◽  
Author(s):  
Faezeh Taghavi ◽  
Mostafa Gholizadeh ◽  
Amir Sh. Saljooghi ◽  
Mohammad Ramezani
Keyword(s):  
Heterogeneous Catalyst ◽  
Catalytic System ◽  
Low Cost ◽  
Orange Peel ◽  
One Pot ◽  
Metal Free ◽  
Xanthene Derivatives ◽  
Cost Efficient ◽  
Efficient Heterogeneous Catalyst

In this work, a facile, efficient and metal free catalytic system has been developed for the synthesis of tetrahydrobenzo[a]xanthene derivativesviaa one-pot three-component condensation of various aldehydes, 2-naphthol, and dimedone.

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...

ChemInform Abstract: Nano-MoO3as a Highly Efficient Heterogeneous Catalyst for a One-Pot Synthesis of Tetrahydropyrimidine Derivatives in Water.

ChemInform ◽  
2015 ◽  
Vol 46 (18) ◽  
pp. no-no
Author(s):  
Elham Zarenezhad ◽  
Mohammad Navid Soltani Rad ◽  
Mohammad Hossein Mosslemin ◽  
Masoumeh Tabatabaee ◽  
Somayeh Behrouz
Keyword(s):  
Heterogeneous Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Efficient Heterogeneous Catalyst

Magnetic (chitosan/laponite)-immobilized copper(ii) ions: an efficient heterogeneous catalyst for azide–alkyne cycloaddition

2017 ◽  
Vol 41 (10) ◽  
pp. 3821-3828 ◽  
Author(s):  
Gholam Reza Mahdavinia ◽  
Moslem Soleymani ◽  
Mohammad Nikkhoo ◽  
Sayed Morteza F. Farnia ◽  
Mojtaba Amini
Keyword(s):  
Heterogeneous Catalyst ◽  
Catalytic System ◽  
Magnetic Chitosan ◽  
Green Protocol ◽  
Efficient Heterogeneous Catalyst

Under a green protocol and using Cu2+-loaded magnetic chitosan/laponite catalytic system, CuAAC reactions were successfully performed to obtain 1,4-disubstituted-1,2,3-triazoles in good to excellent yields.

Self-assembled iron-containing mordenite monolith for carbon dioxide sieving

Science ◽  
2021 ◽  
Vol 373 (6552) ◽  
pp. 315-320
Author(s):  
Yu Zhou ◽  
Jianlin Zhang ◽  
Lei Wang ◽  
Xili Cui ◽  
Xiaoling Liu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Gas Adsorption ◽  
Separation Efficiency ◽  
Low Cost ◽  
One Pot ◽  
Free Process ◽  
Binder Free ◽  
Self Assembled ◽  
Cost Efficient ◽  
Breakthrough Experiments

The development of low-cost, efficient physisorbents is essential for gas adsorption and separation; however, the intrinsic tradeoff between capacity and selectivity, as well as the unavoidable shaping procedures of conventional powder sorbents, greatly limits their practical separation efficiency. Herein, an exceedingly stable iron-containing mordenite zeolite monolith with a pore system of precisely narrowed microchannels was self-assembled using a one-pot template- and binder-free process. Iron-containing mordenite monoliths that could be used directly for industrial application afforded record-high volumetric carbon dioxide uptakes (293 and 219 cubic centimeters of carbon dioxide per cubic centimeter of material at 273 and 298 K, respectively, at 1 bar pressure); excellent size-exclusive molecular sieving of carbon dioxide over argon, nitrogen, and methane; stable recyclability; and good moisture resistance capability. Column breakthrough experiments and process simulation further visualized the high separation efficiency.

A rapid metal free synthesis of 5-substituted-1H-tetrazoles using cuttlebone as a natural high effective and low cost heterogeneous catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 49849-49860 ◽  
Author(s):  
Sara S. E. Ghodsinia ◽  
Batool Akhlaghinia
Keyword(s):  
Heterogeneous Catalyst ◽  
Sodium Azide ◽  
High Efficiency ◽  
Low Cost ◽  
Cycloaddition Reaction ◽  
Metal Free ◽  
Substituted 1

A convenient, rapid and metal free synthesis of 5-substituted-1H-tetrazoles by [3 + 2] cycloaddition reaction of nitriles with sodium azide. Cuttlebone as a natural low cost heterogeneous catalyst affords 5-substituted-1H-tetrazoles rapidly with high efficiency.

scholarly journals Efficient Cu-catalyzed base-free C–S coupling under conventional and microwave heating. A simple access to S-heterocycles and sulfides

2013 ◽  
Vol 9 ◽  
pp. 467-475 ◽  
Author(s):  
Silvia M Soria-Castro ◽  
Alicia B Peñéñory
Keyword(s):  
Microwave Irradiation ◽  
Microwave Heating ◽  
Catalytic System ◽  
Low Cost ◽  
One Pot ◽  
Alkyl Aryl ◽  
One Pot Synthesis ◽  
Aryl Iodides ◽  
The One ◽  
Aryl Sulfides

S-aryl thioacetates can be prepared by reaction of inexpensive potassium thioacetate with both electron-rich and electron-poor aryl iodides under a base-free copper/ligand catalytic system. CuI as copper source affords S-aryl thioacetates in good to excellent yields, by using 1,10-phenanthroline as a ligand in toluene at 100 °C after 24 h. Under microwave irradiation the time was drastically reduced to 2 h. Both procedures are simple and involve a low-cost catalytic system. This methodology was also applied to the “one-pot” synthesis of target heterocycles, such as 3H-benzo[c][1,2]dithiol-3-one and 2-methylbenzothiazole, alkyl aryl sulfides, diaryl disulfides and asymmetric diaryl sulfides in good yields.

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