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Zone I modifications based on mcf292-03.
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|---|---|---|---|---|
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| Entry | Condition | Structure | Yield, % (from 21) | Product |
|
| ||||
| R2 | ||||
| 1 | tBuONO, TMSN3, MeCN, rt | N3 | 38% | mcf292-08 |
| 2 | CSCl2, NaHCO3, CHCl3/H2O, rt | NCS | 41% | mcf292-05 |
| 3 | ClCH2COCl, 2,6-lutidine, DCM, rt | NHCOCH2Cl | 46% | mcf292-09 |
