Table 3.
Preparation of 17 via palladium-catalyzed cross-couplings and 18 via N,O-bond cleavage
| Entry | Cross-Coupling Reagent | Product | Yield (%) | Product | Yield (%) |
|---|---|---|---|---|---|
| 1 | 12{7} | 17{7} | 95 | 18{7} | 90 |
| 2 | 12{8} | 17{8} | 82 | 18{8} | 84 |
| 3 | 12{4} | 17{4} | 81 | 18{4} | 90 |
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