Silicananoparticles as a reusable catalyst: a straightforward route for the synthesis of thioethers, thioesters, vinyl thioethers and thio-Michael adducts under neutral reaction conditions

2010 ◽  
Vol 34 (2) ◽  
pp. 302-306 ◽  
Author(s):  
Subhash Banerjee ◽  
Jayanta Das ◽  
Richard P. Alvarez ◽  
Swadeshmukul Santra
Keyword(s):  
Reusable Catalyst ◽  
Reaction Conditions ◽  
Neutral Reaction ◽  
Michael Adducts

Novel Ceric Ammonium Nitrate-Stabilized Maghemite Nanoparticles (CAN-γ-Fe2O3) for Ultrasound Assisted Synthesis of β-Amino Derivatives

2021 ◽  
Author(s):  
Anurag Kumar ◽  
Yifat Harel ◽  
Jean-paul Lellouche ◽  
Suman L. Jain
Keyword(s):  
Carbonyl Compounds ◽  
Addition Reaction ◽  
Ceric Ammonium Nitrate ◽  
Reusable Catalyst ◽  
Maghemite Nanoparticles ◽  
Reaction Conditions ◽  
Recyclable Catalysts ◽  
Nucleophilic Addition Reaction ◽  
Amino Derivatives ◽  
Positively Charged

Abstract Owing to their inherent features like smaller size and higher surface area exposed to reactants, nanoparticles have gained enormous interest and are extensively used as magnetically recyclable catalysts for various organic reactions. Herein, we report highly hydrophilic, non-aggregated, and strongly positively charged (ζ potential: +45.7 mV) ultra-small cerium cations/complexes- stabilized maghemite nanoparticles in water as an efficient and reusable nanoscaled magnetically active catalyst for the nucleophilic addition reaction of various amines with α,β-unsaturated carbonyl compounds to give corresponding β-amino derivatives under ultrasonic irradiation. The developed protocol provides several merits such as high product yields, mild reaction conditions, reusable catalyst and easy workup.

Synthesis of Yuehchukene Analogues, Murrapanine and Normurrapanine Utylizing Thermal Reaction of b-(1-Hydroxybutenyl)indoles under Neutral Reaction Conditions

Heterocycles ◽  
1996 ◽  
Vol 43 (8) ◽  
pp. 1751 ◽  
Author(s):  
Jyh-Horng Sheu ◽  
Yua-Kuang Chen ◽  
Huey-Fen Chung ◽  
Ping-Jyun Sung ◽  
Song-Fong Lin
Keyword(s):  
Thermal Reaction ◽  
Reaction Conditions ◽  
Neutral Reaction

An efficient and eco-friendly method for the thiol-Michael addition in aqueous solutions using amino acid ionic liquids (AAILs) as organocatalysts

2020 ◽  
Vol 92 (1) ◽  
pp. 97-106
Author(s):  
Roberto Figueroa Guíñez ◽  
José G. Santos ◽  
Ricardo A. Tapia ◽  
Jackson J. Alcazar ◽  
Margarita E. Aliaga ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquids ◽  
Amino Acid ◽  
Efficient Method ◽  
Michael Addition ◽  
Rate Constants ◽  
Michael Reaction ◽  
High Rate ◽  
Reusable Catalyst ◽  
Reaction Conditions

AbstractA series of amino-acid based ionic liquids (Bmim[AA]s) have been synthesized and evaluated as catalysts, in aqueous solution. The results of a kinetic study of the thiol-Michael reaction of L-Cysteine with trans-β-nitrostyrene demonstrated the advantages of using (Bmim[AA]s) as organocatalysts. The benefits include high rate constants; mild reaction conditions; and, a reusable catalyst, which leads to a simple and efficient method for these important kinds of reactions.

Selective Manganese‐Catalyzed Oxidation of Hydrosilanes to Silanols under Neutral Reaction Conditions

2019 ◽  
Vol 58 (19) ◽  
pp. 6380-6384 ◽  
Author(s):  
Kaikai Wang ◽  
Jimei Zhou ◽  
Yuting Jiang ◽  
Miaomiao Zhang ◽  
Chao Wang ◽  
...  
Keyword(s):  
Reaction Conditions ◽  
Neutral Reaction ◽  
Catalyzed Oxidation
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