反应详情

6-Methoxy-2-phenyl-3,4-dihydro-2H-naphthalen-1-one (1.0 g) was refluxed with 47% HBr (20 ml) until disappearance of the starting material. The mixture was poured into water and extracted with ethyl acetate. Ethyl acetate was dried and evaporated. The product was recrystallised from toluene. 1H NMR (400 MHz, d6-DMSO) δ: 10.35 (s, 1H), 7.79 (d, 1H, J 8.6 Hz), 7.15-7.33 (m, 5H), 6.75 (dd, 1H, J 8.6, 2.4 Hz), 6.68 (d, 1H, J 2.3 Hz), 3.79-3.85 (m, 1H), 2.99-3.06 (m, 1H), 2.83-2.90 (m, 1H), 2.19-2.33 (m, 2H).

1. extractionextracted with ethyl acetate
2. dry with materialEthyl acetate was dried
3. customevaporated
4. customThe product was recrystallised from toluene