反应详情

温度

70 °C

A mixture of 1-methyl-3,5-dinitropyridin-2(1H)-one (B) (947 mg, 4.76 mmol), cyclohexanone (0.5 mL, 5.70 mmol) and ammonia solution (1 M) in methanol (50 mL) was heated to 70° C. for 3 h under N2. TLC showed complete consumption of starting material. The reaction mixture was removed in vacuo and extracted with ethyl acetate. The organic part was washed with water and brine. The organic layer was dried over MgSO4 and concentrated under reduced pressure to afford crude which was purified by column chromatography to afford 3-nitro-6,7-dihydro-5H-cyclopenta[b]pyridine (C). (340 mg, 44%)

1. customconsumption of starting material
2. customThe reaction mixture was removed in vacuo
3. extractionextracted with ethyl acetate
4. washThe organic part was washed with water and brine
5. dry with materialThe organic layer was dried over MgSO4
6. concentrationconcentrated under reduced pressure
7. customto afford crude which
8. customwas purified by column chromatography