ChemInform Abstract: A Copper-Based Ionic Liquid as Inexpensive and Efficient Catalyst for the [3 + 2] Cycloaddition of Azides and Terminal Alkynes.

ChemInform ◽  
2014 ◽  
Vol 45 (9) ◽  
pp. no-no
Author(s):  
Balaji Mohan ◽  
Hyuntae Kang ◽  
Kang Hyun Park
Keyword(s):  
Ionic Liquid ◽  
Terminal Alkynes ◽  
Efficient Catalyst

Preparation and Characterization of a Novel Room Temperature Dicationic Ionic Liquid and its Application in the Synthesis of Xanthenediones Under Solvent-Free Conditions

2018 ◽  
Vol 21 (8) ◽  
pp. 602-608 ◽  
Author(s):  
Zainab Ehsani-Nasab ◽  
Ali Ezabadi
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Reaction Times ◽  
Significant Loss ◽  
Solvent Free ◽  
Acidity Function ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Hammett Acidity Function ◽  
Dicationic Ionic Liquid

Aim and Objective: In the present work, 1, 1’-sulfinyldiethylammonium bis (hydrogen sulfate) as a novel room temperature dicationic ionic liquid was synthesized and used as a catalyst for xanthenediones synthesis. Material and Method: The dicationic ionic liquid has been synthesized using ethylamine and thionyl chloride as precursors. Then, by the reaction of [(EtNH2)2SO]Cl2 with H2SO4, [(EtNH2)2SO][HSO4]2 was prepared and after that, it was characterized by FT-IR, 1H NMR, 13C NMR as well as Hammett acidity function. This dicationic ionic liquid was used as a catalyst for the synthesis of xanthenediones via condensation of structurally diverse aldehydes and dimedone under solvent-free conditions. The progress of the reaction was monitored by thin layer chromatography (ethyl acetate/n-hexane = 3/7). Results: An efficient solvent-free method for the synthesis of xanthenediones has been developed in the presence of [(EtNH2)2SO][HSO4]2 as a powerful catalyst with high to excellent yields, and short reaction times. Additionally, recycling studies have demonstrated that the dicationic ionic liquid can be readily recovered and reused at least four times without significant loss of its catalytic activity. Conclusion: This new dicationic ionic liquid can act as a highly efficient catalyst for xanthenediones synthesis under solvent-free conditions.

Heterogenization of amine-functionalized ionic liquids using graphene oxide as a support material: a highly efficient catalyst for the synthesis of 3-substituted indoles via Yonemitsu-type reaction

2017 ◽  
Vol 41 (24) ◽  
pp. 15545-15554 ◽  
Author(s):  
Charu Garkoti ◽  
Javaid Shabir ◽  
Padmini Gupta ◽  
Manisha Sharma ◽  
Subho Mozumdar
Keyword(s):  
Ionic Liquid ◽  
Graphene Oxide ◽  
Ionic Liquids ◽  
Recyclable Catalyst ◽  
Support Material ◽  
Efficient Catalyst ◽  
Functionalized Ionic Liquid ◽  
Type Reaction ◽  
Highly Efficient ◽  
Amine Functionalized

Heterogenization of amine functionalized ionic liquid and its application as an efficient and recyclable catalyst.

Simple ZnEt2as a catalyst in carbodiimide hydroalkynylation: structural and mechanistic studies

2017 ◽  
Vol 46 (38) ◽  
pp. 12923-12934 ◽  
Author(s):  
Antonio Martínez ◽  
Sonia Moreno-Blázquez ◽  
Antonio Rodríguez-Diéguez ◽  
Alberto Ramos ◽  
Rafael Fernández-Galán ◽  
...  
Keyword(s):  
Terminal Alkynes ◽  
Mechanistic Studies ◽  
Efficient Catalyst

Simple ZnEt2is an efficient catalyst for the addition of terminal alkynes to carbodiimides, through amidinate complexes, and consecutive isocyanate addition and intramolecular cyclohydroamination.

Nano-silica supported acidic ionic liquid as an efficient catalyst for the multi-component synthesis of indazolophthalazine-triones and bis-indazolophthalazine-triones

2013 ◽  
Vol 3 (10) ◽  
pp. 2717 ◽  
Author(s):  
Shirin Safaei ◽  
Iraj Mohammadpoor-Baltork ◽  
Ahmad Reza Khosropour ◽  
Majid Moghadam ◽  
Shahram Tangestaninejad ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Nano Silica ◽  
Efficient Catalyst ◽  
Acidic Ionic Liquid
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