Entry | Conditions | Time (h) | Yield 4e (%) |
1 | Xylene, reflux | 12 | 11 |
2 | Py/Xylene. Reflux | 2.0 | 37 |
3 | Py/Xylene, MW Open Vessel (200 W, 180˚C - 190˚C) | 1.5 | 80 |
4 | MW Open Vessel (200 W, 180 - 190˚C) | 0.16 | 98 |