反应详情

4-bromomethyl-2-(4,5-dimethoxy-2-methoxymethoxyphenyl)benzoxazole (F13) was prepared in a similar manner for the preparation of 4-bromomethyl-2-(5-methoxy-2-methoxymethoxyphenyl)benzoxazole (F12) by using 2-(4,5-dimethoxy-2-methoxymethoxyphenyl)-4-methylbenzoxazole (F9) (1.39 g, 4.23 mmol) instead of 2-(5-methoxy-2-methoxymethoxyphenyl)-4-methylbenzoxazole (F8) in 66% (1.14 g): 1H-NMR (500 MHz, CDCl3) δ3.60 (s, 3H), 3.97 (s, 3H), 3.99 (s, 3H), 4.96 (s, 2H), 5.31 (s, 2H), 6.85 (s, 1H), 7.30 (t, 1H, J=8.0 Hz), 7.40 (d, 1H, J=8.0 Hz), 7.51 (d, 1H, J=8.0 Hz), 7.66 (s, 1H).