Table 2.
entry | deviation from “standard conditions” | yieldb (%) |
---|---|---|
1 | none | >95 |
2 | no 1a | <5 |
3 | 20 mol% HCpCr(CO)3 or 20 mol% HV(CO)4(dppe) instead of 1a | <5 |
4 | 1 mol% 1a, 72 h | >95 |
5 | 0.4 equiv PhSiH3 | >95 |
All reactions are performed on 0.5 mmol scale.
Determined by 19F NMR.