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Brønsted acidic ionic liquid as the efficient and reusable catalyst for synthesis of coumarins via Pechmann condensation under solvent-free conditions
| Content Provider | Semantic Scholar |
|---|---|
| Author | Abdol, R. Hajipour Nafisehsadat, Sheikhan Ali, Alaei M. Amin, Zarei |
| Copyright Year | 2015 |
| Abstract | A mild and efficient method has been developed for the preparation of substituted coumarins from reaction of various phenols with different β-ketoesters via Pechmann condensation in the presence of Bronsted acidic ionic liquid (N-(4-sulfonic acid) butyl triethylammonium hydrogen sulfate) as an effective catalyst under solvent-free conditions. Different phenols reacted with ethyl acetoacetate to produce the corresponding substituted coumarins in high to excellent yields and short reaction times. Moreover, [TEBSA][HSO4] has been used as an effective green catalyst for the synthesis of coumarin derivatives under solvent-free conditions. Using the relatively non-toxic (halogen-free) and reusable Bronsted acidic ionic liquid, high catalytic efficiency, high yields, short reaction times and straightforward work-up are advantages of this protocol. |
| Starting Page | 231 |
| Ending Page | 236 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| Volume Number | 5 |
| Alternate Webpage(s) | https://www.sid.ir/FileServer/JE/1036220150304.pdf |
| Alternate Webpage(s) | http://ijc.iaush.ac.ir/article_8636_00b7cae999a94688e37f43ac6d547520.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
