Conditions | Reaction time/min | Yield/% | ||
Carbazole | Dibenzofuran | Benzothiophene | ||
Microwave | 4 | 26.4 | 27.7 | 30.4 |
10 | 32.9 | 34.3 | 32.9 | |
Conventional | 120 | 36.9 | 37.6 | 38.5 |