One-pot synthesis of coumarine derivatives using butylenebispyridinium hydrogen sulfate as novel ionic liquid catalyst |
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| Authors: | Sobhan Rezayati Fatemeh Sheikholeslami-Farahani Faramarz Rostami-Charati Saeid Afshari Sharif Abad |
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| Institution: | 1.Department of Chemistry, Qaemshahr Branch,Islamic Azad University,Qaemshahr,Iran;2.Department of Chemistry, Firookooh Branch,Islamic Azad University,Tehran,Iran;3.Department of Chemistry, Faculty of Science,Gonbad Kavous University,Gonbad,Iran |
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| Abstract: | Pechmann condensation reaction of 3-hydroxyphenol and ethyl acetoacetate in the presence of 1,1′‐butylenebispyridinium hydrogen sulfate as an efficient, green, and recyclable catalyst produces 7-hydroxy-4-methylcoumarin in good yield under solvent-free conditions at room temperature. This catalyst has advantages such as the following: good to excellent yields, short reaction times, simplicity in operation, and easy workup procedure. |
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