Gallium Oxide (Ga2O3): An Efficient Heterogeneous Nanocatalyst for One Pot, Multi-Component Synthesis of Polyhydroquinolines

2021 ◽  
pp. 1-15
Author(s):  
Amol Parhad ◽  
Dilip Aute ◽  
Anil Gadhave ◽  
Bhagwat Uphade
Keyword(s):  
Gallium Oxide ◽  
One Pot ◽  
Heterogeneous Nanocatalyst

KF Impregnated Natrolite Zeolite as a New Heterogeneous Nanocatalyst Promoted One-Pot Synthesis of Benzo[1,4]-Diazepin-5-One Derivatives

2021 ◽  
pp. 1-16
Author(s):  
Annataj Noushin ◽  
S. Zahra Sayyed-Alangi ◽  
Ali Varasteh-Moradi ◽  
Zinatossadat Hossaini ◽  
Sattar Arshadi
Keyword(s):  
One Pot ◽  
Heterogeneous Nanocatalyst ◽  
One Pot Synthesis

Fe3O4@chitosan nanoparticles: a valuable heterogeneous nanocatalyst for the synthesis of 2,4,5-trisubstituted imidazoles

RSC Advances ◽  
2014 ◽  
Vol 4 (40) ◽  
pp. 20932-20939 ◽  
Author(s):  
Zohre Zarnegar ◽  
Javad Safari
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Ammonium Acetate ◽  
Chitosan Nanoparticles ◽  
One Pot ◽  
Heterogeneous Nanocatalyst ◽  
Aryl Aldehydes ◽  
One Pot Condensation ◽  
Co Precipitation

Chitosan-coated Fe3O4 nanoparticles (Fe3O4@CS) were prepared simply through in situ co-precipitation of Fe2+ and Fe3+ ions via NH4OH in an aqueous solution of chitosan and their catalytic activity was investigated in the synthesis of 2,4,5-trisubstituted imidazoles by a one-pot condensation of benzil derivatives, aryl aldehydes and ammonium acetate in EtOH.

Sulfonated multiwalled carbon nanotubes (MWCNTs) as a new, efficient, and recyclable heterogeneous nanocatalyst for the synthesis of amines

2012 ◽  
Vol 90 (8) ◽  
pp. 701-707 ◽  
Author(s):  
M. M. Doroodmand ◽  
S. Sobhani ◽  
A. Ashoori
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Chemical Vapor ◽  
Catalytic Amount ◽  
Multiwalled Carbon ◽  
One Pot ◽  
Heterogeneous Nanocatalyst ◽  
Aldehydes And Ketones ◽  
Simple Filtration

Sulfonated multiwalled carbon nanotubes (MWCNTs) were synthesized by chemical vapor deposition (CVD) as a new and facile one-pot method using acetylene (as the CNT precursor), thiophene (as the sulfur precursor), and ferrocene (for in situ liberation of metal nanoparticles as the CNT nanocatalyst). A low catalytic amount of the resulting sulfonated MWCNTs with a turnover number (TON) up to 980 and a turnover frequency (TOF) up to 11 160 h–1 was utilized as a new and recyclable heterogeneous nanocatalyst for the efficient one-pot synthesis of various amines (secondary and tertiary) by direct reductive amination of aldehydes and ketones using NaBH4. The catalyst was easily isolated from the reaction mixture by simple filtration and reused at least five times without significant degradation in activity.

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