An Efficient and Green One-pot Synthesis of 12-Aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives Promoted by Sulfamic Acid in [BMIM]BF4 Ionic Liquid

2012 ◽  
Vol 30 (2) ◽  
pp. 362-366 ◽  
Author(s):  
Hongjun Zang ◽  
Yong Zhang ◽  
Bowen Cheng ◽  
Weiwei Zhang ◽  
Xianlin Xu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Sulfamic Acid ◽  
One Pot ◽  
One Pot Synthesis

Sulfamic Acid Catalyzed One-Pot Synthesis of Polyhydroquinolines via the Hantzsch Four Component Condensation Reaction

2009 ◽  
Vol 39 (3) ◽  
pp. 161-164 ◽  
Author(s):  
Naser Foroughifar ◽  
Akbar Mobinikhaledi ◽  
Mohammad Ali Bodaghi Fard ◽  
Hassan Moghanian ◽  
Sattar Ebrahimi
Keyword(s):  
Condensation Reaction ◽  
Sulfamic Acid ◽  
One Pot ◽  
One Pot Synthesis ◽  
Acid Catalyzed

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.

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