From: Microwave assisted solvent free synthesis of 1,3-diphenylpropenones
Entry | Catalyst | Catalyst loading a | Time (sec) | Yieldb(%) |
---|---|---|---|---|
1 | None | - | 100 | Trace |
2 | Al2O3 (neutral) | 1:1 | 100 | 9 |
3 | Al2O3 (basic) | 1:1 | 100 | 23 |
4 | Al2O3 (acidic) | 1:1 | 100 | 27 |
5 | I2 | 10 | 100 | 63 |
6 | I2 | 20 | 100 | 65 |
7 | I2 | 50 | 100 | 61 |
8 | I2-Al2O3 (basic) | 1:1 | 100 | 67 |
9 | I2-Al2O3 (neutral) | 1:1 | 100 | 94 |
10 | I2-Al2O3 (neutral) | 1:1 | 300 | Trace c |
11 | I2-Al2O3 (acidic) | 1:1 | 100 | 71 |
12 | I2-Al2O3 (neutral) | 2:1 | 100 | 69 |
13 | I2-Al2O3 (neutral) | 2:1 | 150 | 69 |
14 | I2-Al2O3 (neutral) | 2:1 | 300 | 71 |
15 | I2-Al2O3 (neutral) | 1:2 | 80 | 94 |
16 | I2-Al2O3 (neutral) | 1:2 | 60 | 81 |