反应详情

Reaction of 1-(5,6,7,8-tetrahydro-naphthalen-2-yl)-ethanone (5 g, 28.70 mmol), acetic acid (1.6 mL, 28.70 mmol), and bromine (1.7 mL, 33.00 mmol) followed by recrystallisation from cold EtOAc/Hexane gave the title compound (1.9 g, 26%) as a yellow powder. 1H NMR (300 MHz, CD3OD) δ 1.84 (t, 4H, J=6.6 Hz), 2.80–2.85 (m, 4H), 4.61 (s, 2H), 7.19 (d, 1H, J=8.7 Hz), 7.70–7.78 (m, 2H). ES-MS m/z 253 (M+H).

1. customfollowed by recrystallisation from cold EtOAc/Hexane