Conditions | Reaction time/min | Yield/% | |||
Indol | Benzofuran | Benzotiophene | Indene | ||
Microwave | 5 | 0 | 0 | 10.0 | 29.8 |
10 | 0 | 0 | - | - | |
Conventional | 120 | 0 | 0 | 9.6 | 31.5 |