Alginate–copper microspheres as efficient and reusable heterogeneous catalysts for the one-pot synthesis of 4-organylselanyl-1H-pyrazoles

2020 ◽  
Vol 10 (12) ◽  
pp. 3918-3930 ◽  
Author(s):  
Jaqueline F. Souza ◽  
Thalita F. B. de Aquino ◽  
José E. R. Nascimento ◽  
Raquel G. Jacob ◽  
André R. Fajardo
Keyword(s):  
Heterogeneous Catalysts ◽  
One Pot ◽  
New Class ◽  
One Pot Synthesis ◽  
Facile Preparation ◽  
The One ◽  
Substituted Pyrazoles

This study demonstrates the facile preparation and use of alginate–Cu2+ microspheres in the catalysis of a new class of organoselenium substituted pyrazoles through one-pot reactions.

Cu(0) onto sulfonic acid functionalized silica/carbon composites as bifunctional heterogeneous catalysts for the synthesis of polysubstituted pyridines and nitriles under benign reaction media

RSC Advances ◽  
2016 ◽  
Vol 6 (101) ◽  
pp. 99604-99614 ◽  
Author(s):  
Madhvi Bhardwaj ◽  
Manmeet Kour ◽  
Satya Paul
Keyword(s):  
Sulfonic Acid ◽  
Heterogeneous Catalysts ◽  
Carbon Composites ◽  
Functionalized Silica ◽  
One Pot ◽  
Oxidative Transformation ◽  
One Pot Synthesis ◽  
The One ◽  
Reaction Media

Bifunctional heterogeneous catalysts based on Cu(0) onto sulphonated silica/carbon composites for the one-pot synthesis of polysubstituted pyridines and oxidative transformation of aldehydes to nitriles.

ChemInform Abstract: Heterogeneous Catalysts for the One-Pot Synthesis of Chemicals and Fine Chemicals

ChemInform ◽  
2011 ◽  
Vol 42 (20) ◽  
pp. no-no ◽  
Author(s):  
Maria J. Climent ◽  
Avelino Corma ◽  
Sara Iborra
Keyword(s):  
Heterogeneous Catalysts ◽  
Fine Chemicals ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One

scholarly journals Biphen[n]arenes

2015 ◽  
Vol 6 (1) ◽  
pp. 197-202 ◽  
Author(s):  
Huanqing Chen ◽  
Jiazeng Fan ◽  
Xiaoshi Hu ◽  
Junwei Ma ◽  
Shilu Wang ◽  
...  
Keyword(s):  
One Pot ◽  
New Class ◽  
One Pot Synthesis ◽  
The One

We describe the one-pot synthesis, unique geometries and intriguing host–guest properties of a new class of supramolecular macrocycles – biphen[n]arenes (n = 3, 4).

ChemInform Abstract: Nano Copper and Cobalt Ferrites as Heterogeneous Catalysts for the One-Pot Synthesis of 2,4,5-Tri Substituted Imidazoles.

ChemInform ◽  
2015 ◽  
Vol 46 (22) ◽  
pp. no-no
Author(s):  
Paul Douglas Sanasi ◽  
D. Santhipriya ◽  
Y. Ramesh ◽  
M. Ravi Kumar ◽  
B. Swathi ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
One Pot ◽  
One Pot Synthesis ◽  
Cobalt Ferrites ◽  
The One

scholarly journals Supported bimetallic nano-alloys as highly active catalysts for the one-pot tandem synthesis of imines and secondary amines from nitrobenzene and alcohols

2016 ◽  
Vol 6 (14) ◽  
pp. 5473-5482 ◽  
Author(s):  
Meenakshisundaram Sankar ◽  
Qian He ◽  
Simon Dawson ◽  
Ewa Nowicka ◽  
Li Lu ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Secondary Amines ◽  
One Pot ◽  
Benzylic Alcohols ◽  
One Pot Synthesis ◽  
Highly Active ◽  
The One ◽  
Tandem Synthesis

All-in-one: supported nanoalloys as efficient heterogeneous catalysts for the one-pot synthesis of imines and secondary amines directly from nitrobenzene and benzylic alcohols using a hydrogen auto transfer strategy.

Bonded- and discreted-Lindqvist hexatungstate-based copper hybrids as heterogeneous catalysts for the one-pot synthesis of 2-phenylquinoxalines via 2-haloanilines with vinyl azides or 3-phenyl-2H-azirines

2020 ◽  
Vol 49 (40) ◽  
pp. 13993-13998
Author(s):  
Guodong Shen ◽  
Zeyou Wang ◽  
Xianqiang Huang ◽  
Shuwen Gong ◽  
Jiangong Zhang ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
One Pot ◽  
One Pot Synthesis ◽  
Vinyl Azides ◽  
The One

One bonded- and one discreted-Lindqvist hexatungstate-based copper hybrids (Cu-POMs) ([Cu2(O)OH(phen)2]2[W6O19]·6H2O (1) and [Cu2(phen)4Cl] [HW6O19]·2H2O (2) (phen = 1,10-phenanthroline)) were controllably synthesized and routinely characterized.

scholarly journals Tungsten–zirconia-supported rhenium catalyst combined with a deoxydehydration catalyst for the one-pot synthesis of 1,4-butanediol from 1,4-anhydroerythritol

2020 ◽  
Vol 5 (7) ◽  
pp. 1237-1250 ◽  
Author(s):  
Tianmiao Wang ◽  
Yoshinao Nakagawa ◽  
Masazumi Tamura ◽  
Kazu Okumura ◽  
Keiichi Tomishige
Keyword(s):  
Heterogeneous Catalysts ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One

Biomass-derived 1,4-anhydroerythritol is reduced to 1,4-butanediol over a reusable mixture of heterogeneous catalysts, ReOx–Au/CeO2 and ReOx/WO3–ZrO2.

Heterogeneous Catalysts for the One-Pot Synthesis of Chemicals and Fine Chemicals

2011 ◽  
Vol 111 (2) ◽  
pp. 1072-1133 ◽  
Author(s):  
Maria J. Climent ◽  
Avelino Corma ◽  
Sara Iborra
Keyword(s):  
Heterogeneous Catalysts ◽  
Fine Chemicals ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One

Development of N,N-disulfo-1,1,3,3-tetramethylguanidinium chlorometallates as heterogeneous catalysts for one pot synthesis of 1,2-dihydro-1-aryl-3H-naphth[1, 2-e][1,3]oxazin-3-one derivatives

2020 ◽  
Vol 07 ◽  
Author(s):  
Arup Kumar Dutta ◽  
Ruli Borah ◽  
Kabita Boruah
Keyword(s):  
Heterogeneous Catalysts ◽  
Analytical Techniques ◽  
Aromatic Aldehydes ◽  
One Pot ◽  
Metal Chlorides ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
Acidic Compounds ◽  
Recyclable Heterogeneous Catalyst

Background: Four members of N,N-disulfo-1,1,3,3-tetramethylguanidinium chlorometallates [DSTMG]n[X], where n= 1 or 2; X= FeCl4 - , Zn2Cl6 2-, NiCl4 2-, MnCl4 2- were synthesized as solid Brønsted-Lewis acidic compounds and studied the catalytic activity with the most acidic salt for three-component synthesis of 1,2-dihydro-1-aryl-3H-naphth[1,2- e][1,3]oxazin-3-ones. Methods: N,N-disulfo-1,1,3,3-tetramethylguanidinium chlorometallates of the four transition metal cations such as Fe(III), Zn(II), Ni(II) and Mn(II) were prepared after treatment of the parent ionic liquid N,N-disulfo-1,1,3,3- tetramethylguanidinium chloride [DSTMG][Cl] with the respective metal chlorides in different mole fractions at 75 ºC. The synthesis of 1,2-dihydro-1-aryl-3H-naphth[1,2-e][1,3]oxazin-3-ones was carried out via three-component reaction of 2-naphthol, aromatic aldehydes and urea under neat condition at 90 ºC using 7 mol% of the [DSTMG][FeCl4] catalyst. Results: The characterization of synthesized chlorometallates were done using spectroscopic and other analytical techniques including thermogravimetric analysis and Hammett acidity studies. Among the four salts, the salt of Fe(III) ion was observed as the strong Brønsted acidic hydrophobic salt and thus chosen for the catalytic study. Conclusion: A new type of chlorometallates of guanidinium cation with composition [DSTMG]n[X], where X= FeCl4 - /Zn2Cl6 2-/ NiCl4 2-/ MnCl4 2- and n= 1 or 2 were developed as –SO3H functionalized solid acids with varied thermal stability (150-250 ºC) and physisorbed water (0-20%) as observed from the thermogravimetric study. From them, the most Brønsted acidic Fe(III) salt was employed as efficient recyclable heterogeneous catalyst for the one-pot synthesis of 1,2- dihydro-1-aryl-3H-naphth[1,2-e][1,3]oxazin-3-ones in neat condition.

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