反应详情

A solution of 1-nitro-6,7,8,9-tetrahydro-5H-benzo[7]annulene-5-one (CAS #251554-42-4, 2.5 g, 12 mmol), palladium (413 mg, 10% on carbon, 0.4 mmol) in acetic acid (25 ml) under the hydrogen atmosphere (60 PSI) was heated at 60° C. and stirred at for 16 hours. The mixture was filtered through a layer of diatomaceous earth, washed with methanol and concentrated under reduced pressure to provide the title compound. 1H NMR (CDCl3) δ 1.50-1.69 (m, 4H), 1.75-1.86 (m, 2H), 2.71-2.86 (m, 4H), 5.46 (s, 2H), 7.03-7.12 (m, 3H). MS (M+H)+ m/z 162.

1. filtrationThe mixture was filtered through a layer of diatomaceous earth
2. washwashed with methanol
3. concentrationconcentrated under reduced pressure