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Volume 7 (2019)
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Volume 3 (2015)
Volume 2 (2014)
Keywords = 4-hydroxycoumarin
Number of Articles: 2
Phthalimide-N-sulfonic acid and Isatin-N-sulfonic acid as highly efficient catalysts for the synthesis of bis-coumarins
Volume 7, Issue 2, pp. 90-159, Serial No. 23 , April 2019, , Pages 139-145
Abstract
Two highly efficient protocols for the production of bis-coumarins under solvent-free conditions have been introduced. The reaction of 4-hydroxycoumarin (2 eq.) with arylaldehydes (1 eq.) using phthalimide-N-sulfonic acid (PhtSA) or isatin-N-sulfonic acid (IsSA), as solid-acid catalysts, afforded the ... Read More)
[BMIm]BF4-LiCl as an effective catalytic system for the synthesis of dicoumarols
Volume 3, Issue 4, pp. 283-387, Serial No. 9 , October 2015, , Pages 356-366
Abstract
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 ... Read More![[BMIm]BF4-LiCl as an effective catalytic system for the synthesis of dicoumarols](javascript:loadModal('[BMIm]BF4-LiCl as an effective catalytic system fo ... ', 'data/icc/coversheet/201432717692.png'))