Investigation of the solvent effect.
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Entry | Solvent (dry) | Time (h) | Yield% (3b) | Entry | Solvent (dry) | Time (h) | Yield% (3b) |
1 | CHCl3 | 5 | 10 | 3 | DMF | 3 | 81 |
2 | CH3CN | 5 | 15 | 4 | THF | 3 | 70 |
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---|---|---|---|---|---|---|---|
Entry | Solvent (dry) | Time (h) | Yield% (3b) | Entry | Solvent (dry) | Time (h) | Yield% (3b) |
1 | CHCl3 | 5 | 10 | 3 | DMF | 3 | 81 |
2 | CH3CN | 5 | 15 | 4 | THF | 3 | 70 |