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.

Palladium-modified functionalized cyclodextrin as an efficient and recyclable catalyst for reduction of nitroarenes

RSC Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 7950-7954 ◽  
Author(s):  
Yafei Guo ◽  
Jiuling Li ◽  
Fen Zhao ◽  
Guineng Lan ◽  
Liang Li ◽  
...  
Keyword(s):  
High Activity ◽  
Catalytic System ◽  
Sodium Borohydride ◽  
Room Temperature ◽  
Recyclable Catalyst

A kind of palladium-modified functionalized cyclodextrin catalytic system was synthesized and characterized. It showed high activity in the reduction of nitroarenes with the absence of sodium borohydride in water at room temperature.

Iron (III)-doped montmorillonite catalysis of alkenes bearing sulphoxide groups in Diels-Alder reactions

Clay Minerals ◽  
2004 ◽  
Vol 39 (3) ◽  
pp. 345-348 ◽  
Author(s):  
Z. Gültekіn
Keyword(s):  
Catalytic System ◽  
Room Temperature ◽  
Diels Alder ◽  
Tert Butyl ◽  
Image Position ◽  
Short Time

AbstractFe3+-doped K10 montmorillonite combined with 2,6-di-tert-butyl-4-methyl-phenol is a potent catalytic system for trans-2-methylene-1,3-dithiolane 1,3-dioxide as a dienophile. Cycloaddition occurs with cyclopentadiene and furan as a diene at room temperature in short time and with good yields (64% overall).

A highly efficient copper and ligand free protocol for the room temperature Sonogashira reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 16-19 ◽  
Author(s):  
Ankur Gogoi ◽  
Anindita Dewan ◽  
Utpal Bora
Keyword(s):  
Catalytic System ◽  
Room Temperature ◽  
Sonogashira Reaction ◽  
Highly Efficient ◽  
Aryl Iodides ◽  
Ligand Free

A mild and efficient catalytic system based on PdCl2 and Na2SO4 has been developed for the Sonogashira reaction of aryl iodides at room temperature.

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
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