Sodium Hydroxide → tert-Butyl [(3S)-1-(3-nitro-1-oxido-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl)piperidin-3-yl]carbamate

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Reaction Steps

mCPBA (198 mg, 0.883 mmol) was added slowly to a solution of tert-butyl [(3S)-1-(3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridin-4-yl)piperidin-3-yl]carbamate (301 mg, 0.83 mmol) in DCM (1.1 mL) at 0° C. The reaction mixture was then stirred at room temperature for 67 h. The mixture was treated with aq. Na2S2O3 and 1 M NaOH, and then stirred for 30 min. at room temperature. The reaction mixture was extracted with DCM three times. The combined organic layers were dried over Na2SO4, filtered and concentrated under reduced pressure to give the sub-title compound (277 mg, 88%) as light orange powder, which was used without further purification. LCMS calc. for C18H22N4O5 (M+H)+: m/z=379.2. Found: 379.2.

Provenance & Evidence