Table 1.
Effect of ligand and catalyst loading on the gold(I)-catalyzed conversion of 1a to 2a.
 | ||||
|---|---|---|---|---|
| entry | L | cat load (mol %) | time (h) | yield (%)[a] |
| 1 | IPr | 5 | 12 | 97 |
| 2 | IPr | 2 | 15 | 97 |
| 3 | IPr | 1 | 30 | 97 |
| 4 | P1 | 1 | 15 | 100 |
| ||||
[a]
Isolated yields of >95% purity.
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