Table 4.
| ||
---|---|---|
Entry | Conditions | Results |
1 | 50 mol% In(OTf)3, 0.1 M DMSO, 80 °C | No reaction |
2 | 50 mol% In(OTf)3, 0.1 M DMSO, MW, 200 °C, 30 min | aromatization |
3 | 50 mol% In(OTf)3 (wet), 0.1 M DMSO, 120 °C | 46% 29, 50% 24 |
4 | 50 mol% In(OTf)3 (dry), 0.1 M DMSO (distilled), 120 °C | 43% 29, 42% 24 |
5 | 50 mol% In(OTf)3 (dry), 0.1 M DMSO, 1 equiv Na2SO4, 120 °C | 58% 29, 34% 24 |
6 | 5 mol% In(OTf)3 (dry), 1M in DMSO, 120 °C | 54% 29, 22% 24 |