反应详情

The procedure was identical to that used for the preparation of 10a: 25% yield (starting with 5-ethyl-1-naphthol 9c); 1H NMR (DMSO) δ 1.31 (3H, t, J=7.2 Hz, CH3CH2—), 3.12 (2H, q, J=7.2 Hz, CH3CH2—), 5.69 (1H, s, H-3), 7.61 (2H, m, H-8, 9), 7.85 (1H, d, J=8.7 Hz, H-5), 7.99 (1H, d, J=8.7 Hz, H-6), 8.25 (1H, d, J=7.8 Hz, H-10).