Expedient Catalytic Access to Knöevenagel Condensation Using Sr3Al2O6 Nanocomposite in Room Temperature

2017 ◽  
Vol 28 (6) ◽  
pp. 3253-3263 ◽  
Author(s):  
Faezeh Farzaneh ◽  
Mahtab Kashani Maleki ◽  
Elnaz Rashtizadeh
Keyword(s):  
Room Temperature ◽  
Knoevenagel Condensation

Knoevenagel Condensations Catalyzed by New Oil Shale Recyclable Catalyst at Room Temperature and Assisted by Ultrasounds Irradiations

2021 ◽  
Vol 37 (6) ◽  
pp. 1295-1301
Author(s):  
Elmustapha Ennesyry ◽  
Fathallaah Bazi ◽  
Bahija Mounir ◽  
M’hammed Elkouali Elkouali ◽  
Hassan Hannache ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Catalytic System ◽  
Oil Shale ◽  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Recyclable Catalyst ◽  
Short Time

Functionalized alkenes were successfully synthesized via a clean procedure in a short time by using a new recycled heterogeneous catalyst prepared from Moroccan oil shale, this catalyst is characterized by different technics such XRD, BET-BJH, MEB-EDS, and TGA, before it’s has been used in the Knoevenagel condensation between different aldehydes and active methylenes. The results showed that coupling the catalyst with ultrasound irradiations could improve the catalytic system in this transformation by achieving the products in a very short time, the results showed clearly that this catalyst could be considered as excellent recyclable support in Knoevenagel condensation.

Ionic tagged amine supported on magnetic nanoparticles: synthesis and application for versatile catalytic Knoevenagel condensation in water

RSC Advances ◽  
2014 ◽  
Vol 4 (63) ◽  
pp. 33175-33183 ◽  
Author(s):  
Anguo Ying ◽  
Fangli Qiu ◽  
Chenglin Wu ◽  
Huanan Hu ◽  
Jianguo Yang
Keyword(s):  
Magnetic Nanoparticles ◽  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Nanoparticles Synthesis

Propylamine modified with imidazolium ionic moiety grafted onto magnetic nanoparticles (MNPs) was prepared and evaluated as a catalyst for Knoevenagel condensation in water at room temperature.

scholarly journals Simple Protocol for the Knoevenagel Condensation Under Solvent Free Conditions using Tungstophosphoric Acid as Catalyst

2019 ◽  
Vol 31 (10) ◽  
pp. 2181-2184
Author(s):  
Abdulrahman I. Alharthi
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Room Temperature ◽  
Model Compound ◽  
Knoevenagel Condensation ◽  
Maximum Yield ◽  
Tungstophosphoric Acid ◽  
Grinding Method ◽  
Solvent Free Conditions ◽  
Simple Protocol

The effect of calcination on the performance of tungstophosphoric acid for the product of Knoevenagel condensation was investigated. Substituted aldehydes and dimedone has been used in the presence of calcined tungstophosphoric acid as a heterogeneous catalyst using grinding method at room temperature. The results of reactions revealed that calcined tungstophosphoric acid has superior catalytic activity comparing to non-calcined catalyst in terms of yield and reaction time. Maximum yield of model compound was achieved by using 10 mol% of calcined catalyst in a reaction time that does not exceed 10 min, whereas the yield at same amount of non-calcined catalyst was 86 % in a reaction time of 35 min.

Inorganic Zinc Salts Catalyzed Knoevenagel Condensation at Room Temperature without Solvent

2009 ◽  
Vol 39 (2) ◽  
pp. 194-200 ◽  
Author(s):  
Heng Jiang ◽  
Min Wang ◽  
Zhiguo Song ◽  
Hong Gong
Keyword(s):  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Zinc Salts

scholarly journals A readily accessible porous organic polymer facilitates high-yielding Knoevenagel condensation at room temperature both in water and under solvent-free mechanochemical conditions

2021 ◽  
Vol 154 ◽  
pp. 106304
Author(s):  
Parishmita Sarma ◽  
Kashyap Kumar Sarmah ◽  
Dharittri Kakoti ◽  
Sanjeev Pran Mahanta ◽  
Nadeesh Madusanka Adassooriya ◽  
...  
Keyword(s):  
Room Temperature ◽  
Knoevenagel Condensation ◽  
Solvent Free ◽  
Organic Polymer ◽  
Porous Organic Polymer
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