Acidic ionic liquids: highly efficient catalysts for one-pot four-component synthesis of pyrazolo[1,2-b]phthalazines under solvent-free conditions

2018 ◽  
Vol 54 (11) ◽  
pp. 1056-1060 ◽  
Author(s):  
Behjat Pouramiri ◽  
Reza Ghahramani Far ◽  
Mahboobeh Zahedifar
Keyword(s):  
Ionic Liquids ◽  
Solvent Free ◽  
One Pot ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids

ChemInform Abstract: One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Catalyzed by Acidic Ionic Liquids under Solvent-Free Conditions.

ChemInform ◽  
2010 ◽  
Vol 41 (14) ◽  
Author(s):  
Jianzhou Gui ◽  
Dan Liu ◽  
Chan Wang ◽  
Feng Lu ◽  
Jingzhao Lian ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids

One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Catalyzed by Acidic Ionic Liquids Under Solvent-Free Conditions

2009 ◽  
Vol 39 (19) ◽  
pp. 3436-3443 ◽  
Author(s):  
Jianzhou Gui ◽  
Dan Liu ◽  
Chan Wang ◽  
Feng Lu ◽  
Jingzhao Lian ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids

scholarly journals Long-chain Brønsted Acidic Ionic Liquids Catalyzed one-pot three-component Biginelli Reaction under Solvent-Free Conditions

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Leqin He
Keyword(s):  
Ionic Liquids ◽  
Biginelli Reaction ◽  
Aromatic Aldehydes ◽  
Catalytic Performance ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids ◽  
Halogen Free ◽  
Long Chain

A series of halogen-free quaternary ammonium Brønsted acidic ionic liquids (ILs) were prepared and used for Biginelli reaction among aromatic aldehydes, urea or thiourea and β-dicarbonyl compounds. The influencing factors, such as the type and amount of catalyst, solvent, reaction time and reaction temperature, were investigated. The results demonstrated that the 3-(N,N-dimethylhexadecylammonium) propanesulfonic acid toluene sulfate ([DHPA][Tos]) provide the best catalytic activity, with good catalytic performance and reusability under solvent-free conditions. A possible mechanism that accounted for the [DHPA][Tos]-catalyzed reaction was proposed.

A highly efficient and green approach for the synthesis of pyrimido[4,5-b]quinolines using N,N-diethyl-N-sulfoethanaminium chloride

2021 ◽  
Vol 76 (2) ◽  
pp. 85-90
Author(s):  
Abdolkarim Zare ◽  
Manije Dianat
Keyword(s):  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Catalyst Amount ◽  
Green Protocol ◽  
Highly Efficient ◽  
Green Approach ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields

Abstract A highly efficient and green protocol for the synthesis of pyrimido[4,5-b]quinolines has been described. The one-pot multicomponent reaction of dimedone with arylaldehydes and 6-amino-1,3-dimethyluracil in the presence of N,N-diethyl-N-sulfoethanaminium chloride ([Et3N–SO3H][Cl]) as an ionic liquid (IL) catalyst under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times. Our protocol is superior to many of the reported protocols in terms of two or more of these factors: the reaction times, yields, conditions (solvent-free versus usage of organic solvents), temperature and catalyst amount.

An eco-benign and highly efficient procedure for N-acylation catalyzed by heteropolyanion-based ionic liquids using carboxylic acid under solvent-free conditions

Tetrahedron ◽  
2014 ◽  
Vol 70 (13) ◽  
pp. 2237-2245 ◽  
Author(s):  
Zhikai Chen ◽  
Renzhong Fu ◽  
Wen Chai ◽  
Hao Zheng ◽  
Lin Sun ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Carboxylic Acid ◽  
Solvent Free ◽  
Efficient Procedure ◽  
Highly Efficient ◽  
Solvent Free Conditions

scholarly journals Novel Brönsted Acidic Ionic Liquids Confined in UiO-66 Nanocages for the Synthesis of Dihydropyrido[2,3-d]Pyrimidine Derivatives under Solvent-Free Conditions

ACS Omega ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 10548-10557 ◽  
Author(s):  
Boshra Mirhosseini-Eshkevari ◽  
Manzarbanoo Esnaashari ◽  
Mohammad Ali Ghasemzadeh
Keyword(s):  
Ionic Liquids ◽  
Solvent Free ◽  
Pyrimidine Derivatives ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids
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