Table 3 Paal–Knorr Pyrrole Synthesis catalyzed by Humin-SO3H in water at room temperature
From: Humin-sulfuric acid as a novel recoverable biocatalyst for pyrrole synthesis in water
| ||||||
|---|---|---|---|---|---|---|
Entry | Amine | Product | Time (h) | Yield (%) | TON | TOF (h−1) |
1 |
|
| 1 | 98 | 26.48 | 26.48 |
2 |
|
| 1 | 98 | 26.48 | 26.48 |
3 |
|
| 2 | 98 | 26.48 | 13.24 |
4 |
|
| 1 | 94 | 25.40 | 25.40 |
5 |
|
| 3 | 95 | 25.67 | 8.89 |
6 |
|
| 1.15 | 96 | 25.94 | 22.55 |
7 |
|
| 3 | 83 | 22.43 | 7.47 |
8 |
|
| 0.5 | 97 | 26.21 | 52.42 |
9 |
|
| 4 | 87 | 23.51 | 5.87 |
10 |
|
| 1.5 | 90 | 24.32 | 16.21 |
11 |
|
| 3 | 93 | 25.13 | 8.37 |
12 |
|
| 2.5 | 94 | 25.40 | 1.016 |
