scholarly journals Heterogeneous Catalytic Method for the Copper(II)-Catalysed Addition of H-Phosphinates and Secondary Phosphine Oxides to Phenylacetylene

2021 ◽  
Author(s):  
Kinga Juhász ◽  
Bence Varga ◽  
Péter Bagi ◽  
Zoltán Hell
Keyword(s):  
Heterogeneous Catalyst ◽  
Molecular Sieve ◽  
Secondary Phosphine ◽  
Phosphine Oxides ◽  
Catalytic Method ◽  
Heterogeneous Catalytic ◽  
Efficient Heterogeneous Catalyst

AbstractCopper(II) on 4 Å molecular sieve was found to be an efficient heterogeneous catalyst in the addition of different H-phosphinates and secondary phosphine oxides to phenylacetylene. All hydrophosphinylation reactions were completely regioselective, as only β-isomers were formed, and the E-alkenylphosphinates and E-alkenylphosphine oxides were synthesized in moderate to excellent yields. The catalyst could be reused multiple times in the reaction. Graphic Abstract

One-Pot Three-Component Synthesis of 2,4,5-Triaryl-1H-imidazoles in the Presence of a Molecular Sieve Supported Titanium Catalyst under Mild Basic Conditions

Synlett ◽  
2018 ◽  
Vol 30 (01) ◽  
pp. 89-93 ◽  
Author(s):  
Zoltán Hell ◽  
Ágnes Magyar
Keyword(s):  
Heterogeneous Catalyst ◽  
Molecular Sieves ◽  
Molecular Sieve ◽  
Ammonium Acetate ◽  
Condensation Reaction ◽  
Significant Loss ◽  
One Pot ◽  
One Pot Condensation ◽  
The One ◽  
Efficient Heterogeneous Catalyst

A series of 2,4,5-trisubstituted-imidazoles has been synthesized with good to excellent yields by the one-pot condensation reaction of 1,2-dicarbonyl compounds, benzaldehydes, and ammonium acetate in the presence of 4 Å molecular sieves modified with titanium(IV) as an efficient heterogeneous catalyst. The catalyst could be recovered easily and reused without significant loss of activity.

Eight-membered ring petal-shaped V8 cluster: An efficient heterogeneous catalyst for selective sulfur oxidation

2021 ◽  
Vol 517 ◽  
pp. 120198
Author(s):  
Qing-Dong Ping ◽  
Jia-Peng Cao ◽  
Ye-Min Han ◽  
Mu-Xiu Yang ◽  
Ya-Lin Hong ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Sulfur Oxidation ◽  
Membered Ring ◽  
Efficient Heterogeneous Catalyst

scholarly journals ZnAlMCM-41; a very ecofriendly and reusable solid acid catalyst for highly selective synthesis of 1, 3-dioxanes by Prins cyclization of olefins

2021 ◽  
Author(s):  
Manickam Selvaraj ◽  
Mohammed A. Assiri ◽  
Hari Singh ◽  
Jimmy Nelson Appaturi ◽  
Subrahmanyam Ch ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Selective Synthesis ◽  
Comparison Study ◽  
Catalytic Method ◽  
Prins Cyclization ◽  
Heterogeneous Catalytic

Prins cyclization of styrene (SE) with paraformaldehyde (PFCHO) was conducted with mesoporous ZnAlMCM-41 catalysts for synthesis of 4-phenyl-1,3-dioxane (4-PDO) under a liquid phase heterogeneous catalytic method. For comparison study, the...

scholarly journals Co3O4/GO catalyst as efficient heterogeneous catalyst for degradation of wastewater containing polyacrylamide(PAM)

Water Cycle ◽  
2021 ◽  
Vol 2 ◽  
pp. 15-22
Author(s):  
Can Kong ◽  
Fang Liu ◽  
Hui Sun ◽  
Zhou Zhang ◽  
Benjie Zhu ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Efficient Heterogeneous Catalyst

A Discrete Tetrahedral Indium Cage as an Efficient Heterogeneous Catalyst for the Fixation of CO2 and the Strecker Reaction of Ketones

2020 ◽  
Vol 59 (3) ◽  
pp. 1653-1659 ◽  
Author(s):  
Guang-Ming Liang ◽  
Peng Xiong ◽  
Khan Azam ◽  
Qing-Ling Ni ◽  
Jian-Qiang Zeng ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Strecker Reaction ◽  
Efficient Heterogeneous Catalyst

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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