Table 3.
Zincate reactivity with 2 b.
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---|---|---|---|---|---|---|
Entry | x Ph | y Br | δ13C (ipso) | T [°C] | 3 b [%][a] | 4 b [%][a] |
1 | 4 | 0 | 171.4 | 25[b] | 0 | 100 |
2 | 3 | 0 | 169.5 | 60 | 59 | 11 |
3[c] | 3 | 0 | 168.8 | 60 | 69 | 9 |
4 | 3 | 2 | 169.4 | 60 | 63 | 11 |
5 | 2 | 2 | 160.4 | 60 | 3 | 10 |
6 | 1 | 3 | 158.7 | 60 | 0 | 0 |
[a] Yields by 19F NMR spectroscopy and GC‐MS, mass balance where appropriate is unreacted 2 b. [b] 20 min. [c] from ZnPh2 and borate 1 a instead of PhLi.