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A Rapid and Highly Effectual Protocol for the Synthesis of Bis-coumarins using Triethylaminium-N-sulfonic Acid Tetrachloroaluminate under Solvent-Free Conditions

Journal: Chemical Methodologies (Vol.3, No. 6)

Publication Date:

Authors : ; ;

Page : 591-598

Keywords : Bis-coumarin; 4-Hydroxycoumarin; Protic acidic ionic liquid; Triethylaminium-N-sulfonic acid tetrachloroaluminate (TSAT); Solvent-free;

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Abstract

In this work, a rapid and highly effectual protocol for the synthesis of       bis-coumarins has been developed. The one-pot quasi three-component reaction of aromatic aldehydes (1 eq.) with 4-hydroxycoumarin (2 eq.) in the presence of catalytic amount of protic acidic ionic liquid triethylaminium-N-sulfonic acid tetrachloroaluminate (TSAT) under solvent-free conditions afforded the mentioned compounds in high yields and short reaction times.

Last modified: 2020-04-16 01:25:04