Table 6 Comparison of DES with the other catalysts
Entry | Catalyst | Condition | Time (min) | Yield (%) | Refs. |
|---|---|---|---|---|---|
1 | SBPPSP | H2O/EtOH, Reflux | 8–12 | 90–95 | [49] |
2 | TBAB | Water | 45–62 | 85–93 | [50] |
3 | [TETA]TFA | H2O/EtOH, Reflux | 5–240 | 50–94 | [51] |
4 | Nano Al2O3 | EtOH | 300 | 75–89 | [52] |
5 | TRUE | Water | 8–25 | 88–94 | [53] |
6 | DBU | Water/Reflux | 5–20 | 81–94 | [54] |
7 | H5BW12O40 | H2O/EtOH, Reflux | 195–270 | 85–98 | [55] |
8 | DABCO | Neat | 30 | 87–97 | [56] |
9 | (CH2)6N4 | EtOH, Reflux | 7–80 | 89–95 | [57] |
10 | DES | Solvent-free, 60 °C | 10–25 | 85–97 | Our work |