反应详情

17 N-[(1R)-1-(1,3,4-oxadiazol-2-yl)propyl]cyclopentanamine (199 mg, 1.019 mmol) in anhydrous THF (3.980 mL) was treated with NaHCO3 (342.4 mg, 4.076 mmol) then 2,4-dichloro-5-nitro-pyrimidine (197.7 mg, 1.019 mmol). The reaction was stirred overnight at ambient temperature. The reaction was further stirred at 45° C. for 10 hours, diluted with EtOAc/Brine and extracted EtOAc (×3). The combined organic extracts were dried over MgSO4 and concentrated under reduced pressure. The residue was purified by column chromatography (30% EtOAc/petrol) to give the sub-tilte compound as a pale yellow oil (107 mg, 30%); 1H NMR (400.0 MHz, CDCl3) d 1.03 (3H, t), 1.45-2.80 (10H, m), 3.55 (1H, m), 4.39 (1H, m), 8.31 (1H, s), 8.60 (1H, s); MS ES (+) 353.1.

1. stirringThe reaction was further stirred at 45° C. for 10 hours
2. extractionextracted EtOAc (×3)
3. dry with materialThe combined organic extracts were dried over MgSO4
4. concentrationconcentrated under reduced pressure
5. customThe residue was purified by column chromatography (30% EtOAc/petrol)