Table 4.
Time taken for reaction to occur for each of the five derivaties of 1–5.
| Product | Reaction time (h) | Isolated yield (%) |
| 1 | 19 | 81 |
| 4 | 39 | 45 |
| 3 | 21 | 68 |
| 5 | 43 | 46 |
| 2 | 42 | 77 |
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