Table 9.
The NBE effect with alkene 4a.
| ||
|---|---|---|
| Entry | NBE | Yield % (5a/5a’/5a”/4a) |
| 1 | N1 | trace/trace/trace/92 |
| 2 | N3 | 12/trace/trace/76 |
| 3 | N6 | 14/trace/trace/74 |
| 4 | N9 | 10/trace/trace/71 |
| 5 | N10 | 20/trace/trace/65 |
| 6 | N7 | 5/17/trace/55 |
| 7 | N8 | 6/trace/trace/88 |
| 8 | none | 0/41/0/23 |