Efficient and eco-friendly synthesis of quinoxalines derivatives catalyzed by acidic ionic liquids at room temperature

Authors

• Eshagh Rezaee Nezhad ¹
• Sami Sajjadifar ¹
• Sara Miri ²
• Saaid Karimian ¹
• Zahra Abbasi ^{3, 4}

1. Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
2. Department of Chemistry, Payame Noor University, P.O. BOX 19395-4697 Tehran, Iran.
3. Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Iran.
4. Young Researchers and Eliteclub, Department of Chemistry, Ilam Branch, Islamic Azad University, Ilam, Iran.

Abstract

In this research, we have developed cheap recyclable and task-specific acidic ionic liquids (AILs) 1-hydrogen-3-methylimidazolium hydrogen sulfate [Hmim]HSO4, 1-hydrogen-3-methylimidazolium chloride [Hmim]Cl, 2-pyrrolidonium hydrogensulfate [Hnhp]HSO4 and applied them in acid catalyzed synthesis of quinoxaline derivatives from 1,2-phenylendiamines and 1,2-dicarbonyl compounds. The products could be separated from the catalyst simply by filtration and the catalyst could be recycled and reused several times without noticeable loss of efficiency.

Keywords

• Room temperature
• AILs
• Green chemistry
• Quinoxaline
• Acidic ionic liquid