Table 1 Comparative study of the solvent system
From: Facile and efficient one-pot synthesis of benzimidazoles using lanthanum chloride
Number | Solvent | Time (h) | Yield (%) |
|---|---|---|---|
1 | CH3CN | 2.0 | 95 |
2 | CH3OH | 4.0 | 80 |
3 | Dioxane | 5.0 | 75 |
4 | THF | 6.0 | 70 |
5 | Toluene | 7.0 | 65 |
6 | DMF | 5.0 | 6 |
7 | DCM | 8.0 | 50 |
8 | - | 9.0 | - |