Table 1 The effect of reaction condition on the synthesis of 2,3-diphenyl-2,3-dihydroquinazolin-4(1H)-one under various conditions
From: Co-aminobenzamid@Al-SBA-15: a favorable catalyst in synthesis of 2,3-dihydroquinazolin-4(1H)-ones
Entry | Solvent (condition) | Catalyst | Time (min) | Yielda (%) |
|---|---|---|---|---|
1 | Solvent-free | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 80 | 40 |
2 | Water (reflux) | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 80 | 55 |
3 | DCM (reflux) | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 60 | Trace |
4 | Acetone (reflux) | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 60 | 25 |
5 | Acetonitrile (reflux) | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 90 | 30 |
6 | Methanol (reflux) | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 50 | 70 |
7 | Ethanol (reflux) | Co-aminobenzamid@Al-SBA-15 (0.02Â g) | 25 | 85 |
8 | Ethanol (reflux) | Co-aminobenzamid@Al-SBA-15 (0.03Â g) | 25 | 94 |
9 | Ethanol (reflux) | Co-aminobenzamid@Al-SBA-15 (0.05Â g) | 25 | 93 |