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Ag-promoted benzannulations of siloxy alkynes with N-alkylpyridinium iodides.
| |||
|---|---|---|---|
|
| |||
| Entry | Pyridinium salt | Product | Yield, %[a] |
| 1 |
|
|
70 |
| 2 |
|
|
85 |
| 3 |
|
|
85 |
| 4 |
|
|
70 |
| 5 |
|
|
66 |
| 6 |
|
|
55 |
| 7 |
|
|
61 |
Isolated yields after standard chromatographic purification.
