Table 9.
The NBE effect with alkene 4a.
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---|---|---|
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 |