Propylphosphonium hydrogen carbonate ionic liquid supported on nano-silica as a reusable catalyst for the efficient multicomponent synthesis of fully substituted pyridines and bis-pyridines

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 39978-39991 ◽  
Author(s):  
Fahime Rahmani ◽  
Iraj Mohammadpoor-Baltork ◽  
Ahmad R. Khosropour ◽  
Majid Moghadam ◽  
Shahram Tangestaninejad ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Efficient Method ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Nano Silica ◽  
Multicomponent Synthesis ◽  
Solvent Free Conditions ◽  
Hydrogen Carbonate ◽  
Substituted Pyridines

An efficient method for the synthesis of fully substituted pyridines and bis-pyridines in the presence of propylphosphonium hydrogen carbonate supported on nano-silica (PPHC–nSiO2) as a reusable catalyst under solvent-free conditions is reported.

scholarly journals Biocompatible ionic liquid [Betaine][H2PO4] as a reusable catalyst for the substitution of xanthen-9-ol under solvent-free conditions

RSC Advances ◽  
2020 ◽  
Vol 10 (52) ◽  
pp. 31662-31669
Author(s):  
Anlian Zhu ◽  
Tong Wang ◽  
Wanlu Feng ◽  
Jianji Wang ◽  
Lingjun Li
Keyword(s):  
Ionic Liquid ◽  
Substitution Reaction ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Solvent Free Conditions ◽  
Direct Substitution

A cheap and biocompatible ionic liquid [Betaine][H2PO4] was found to be an efficient and reusable catalyst for the direct substitution reaction of xanthen-9-ol under solvent-free conditions.

scholarly journals K7Na3P2W18Cu4O68: A Mild, Efficient, and Reusable Catalyst for the One-Pot Synthesis of 1,2,4,5-Tetra Substituted Imidazoles

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Nasim Milani Kalkhorani ◽  
Majid M. Heravi
Keyword(s):  
Efficient Method ◽  
Ammonium Acetate ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
The One

An efficient method for the synthesis of 1,2,4,5-tetra substituted imidazoles usingK7Na3P2W18Cu4O68as catalyst is reported. This four-component condensation of benzil, aldehydes, amines, and ammonium acetate proceeds under solvent-free conditions. The catalyst is handling and recoverable.

Cholinium ionic liquids as cheap and reusable catalysts for the synthesis of coumarins via Pechmann reaction under solvent-free conditions

RSC Advances ◽  
2014 ◽  
Vol 4 (44) ◽  
pp. 22946-22950 ◽  
Author(s):  
Yuehua Zhang ◽  
Anlian Zhu ◽  
Qianqian Li ◽  
Lingjun Li ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ethyl Acetoacetate ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Pechmann Reaction ◽  
Solvent Free Conditions

Ionic liquid [N112OH][HSO4] was found to be an efficient and reusable catalyst for Pechmann reaction under solvent-free conditions. UV-vis studies suggested that the high catalytic performance of this catalyst was mainly due to its ability to increase the content of keto tautomer of ethyl acetoacetate.

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