Table 1. Optimization of the Reaction Conditions.
entry | deviation from optimal conditions | 2 (% yield)a |
---|---|---|
1 | 75b | |
2 | no (PPh3)AuCl | 0c |
3 | dark | 0 |
4 | no NaHCO3 | 0 |
5 | hν (390 nm) | 36 |
6 | 1,10-phenanthroline (20 mol %) | 60 |
7 | p-CNC6H4N2BF4 instead of 1a | <5 |
GC yield.
Isolated yield after flash chromatography.
Benzonitrile (88% yield) was found as the only product.