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[BMIm]BF4-LiCl as an effective catalytic system for the synthesis of dicoumarols | ||
| Iranian chemical communication | ||
| مقاله 8، دوره 3، Issue 4, pp. 283-387, Serial No. 9، دی 2015، صفحه 356-366 اصل مقاله (206.86 K) | ||
| نوع مقاله: Original Research Article | ||
| نویسندگان | ||
| Seyyedeh Cobra Azimi* 1؛ Kurosh Rad-Moghadam2 | ||
| 1Islamic Azad University, Rasht, Iran | ||
| 2Department of Chemistry, Guilan University | ||
| چکیده | ||
| A homogeneous ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate doped with LiCl ([BMIm]BF4-LiCl) was found as catalyst solvents for the synthesis of dicoumarols by the condensation of 4-hydroxycoumarin and aldehyde at 80 ˚C. In this field, several types of aromatic aldehyde, containing electron-withdrawing groups as well as electron-donating groups, were rapidly changed to the corresponding derivatives in good to excellent yields. Application of this new homogeneous catalyst system offered the advantages of short reaction times, solvent-free conditions, high yields, and easy work-up procedure compared to the conventional methods of the syntheses. The ionic liquid can be recovered for the subsequent reactions and reused without any loss of efficiency. | ||
| کلیدواژهها | ||
| Homogeneous catalyst؛ 4-hydroxycoumarin؛ ionic liquid؛ dicoumarols | ||
| مراجع | ||
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