Ionic-liquid-promoted Four-component One-pot Synthesis of Highly Functionalized Benzimidazo[2,1-b][1,3]thiazines: Facile Construction ofN-fused Heterocycles

2013 ◽  
Vol 2 (6) ◽  
pp. 519-524 ◽  
Author(s):  
I. R. Siddiqui ◽  
Anjali Srivastava ◽  
Shayna Shamim ◽  
Arjita Srivastava ◽  
Shireen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
One Pot ◽  
One Pot Synthesis ◽  
Fused Heterocycles

A one-pot synthesis of benzimidazoles via aerobic oxidative condensation of benzyl alcohols with o-phenylenediamines catalyzed by [MIMPs]+Cl-/NaNO2/TEMPO

2020 ◽  
Vol 44 (9-10) ◽  
pp. 557-565
Author(s):  
Zhenzhen Geng ◽  
Hong-yu Zhang ◽  
Guohui Yin ◽  
Yuecheng Zhang ◽  
Jiquan Zhao
Keyword(s):  
Ionic Liquid ◽  
Catalytic System ◽  
Sodium Nitrite ◽  
High Efficiency ◽  
Oxidative Condensation ◽  
Imidazolium Chloride ◽  
One Pot ◽  
Benzyl Alcohols ◽  
One Pot Synthesis ◽  
The One

The ionic liquid 1-methyl-3-(3-sulfopropyl)imidazolium chloride ([MIMPs]+Cl-) in combination with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) and sodium nitrite (NaNO2) as a catalytic system demonstrates high efficiency in the one-pot two-step aerobic oxidative condensation of benzyl alcohols with 1,2-phenylenediamines to give benzimidazoles. Various benzimidazoles are obtained in good to excellent yields by this strategy.

One-Pot Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles in Ionic Liquid

2013 ◽  
Vol 51 (3) ◽  
pp. 713-718 ◽  
Author(s):  
Yu Wan ◽  
Gui-xiang Liu ◽  
Ling-ling Zhao ◽  
Hai-ying Wang ◽  
Shu-ying Huang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
One Pot ◽  
One Pot Synthesis ◽  
Tetrasubstituted Imidazoles
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