| Autor: |
Sarma, Parishmita, Dutta, Arup, Gogoi, Pinky, Sarma, Bipul, Borah, Ruli |
| Zdroj: |
Chemical Monthly / Monatshefte für Chemie; Jan2015, Vol. 146 Issue 1, p173-180, 8p |
| Abstrakt: |
Two acidic ionic liquids, 3-methyl-1-sulfoimidazolium trichloroacetate ([Msim][OOCCCl]) and 3-methyl-1-sulfoimidazolium chloride ([Msim]Cl) were efficiently utilized as recyclable acidic homogeneous medium for the Friedländer synthesis of quinolines at 100 °C. The reaction completed with single product formation in short time and involved simple isolation of product with 95-100 % yields. The novel ionic liquids [Msim][OOCCCl] and 1-methylimidazolium trichloroacetate ([Hmim][OOCCCl]) prepared from CClCOOH were fully characterized by various analytical techniques. The catalytic activity of the more acidic ionic liquids was also compared with the CClCOOH acid catalyzed synthesis of quinoline at 100 °C under solvent-free condition. Graphical abstract: [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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