反应详情

2-(4,5-dimethoxy-2-hydroxyphenyl)-4-(2-pyridylmethyl)aminomethyl-benzoxazole (F26) was prepared in a similar manner for the preparation of 2-(5-methoxy-2-hydroxyphenyl)-4-(2-pyridylmethyl)aminomethylbenzoxazole (F23) using 2-(4,5-dimethoxy-2-methoxymethoxyphenyl)-4-(2-pyridylmethyl)aminomethylbenzoxazole (F17) (100 mg, 0.23 mmol) instead of 2-(5-methoxy-2-methoxymethoxyphenyl)-4-(2-pyridylmethyl)aminomethylbenzoxazole (F16) in 92% (83 mg); 1H-NMR (500 MHz, CDCl3) δ3.95 (s, 3H), 3.96 (s, 3H), 4.01 (s, 2H), 4.21 (s, 2H), 6.66 (s, 1H), 7.17 (dd, 1H, J=7.5, 5.0 Hz), 7.31 (t, 1H, J=8.0 Hz), 7.37–7.40 (m, 2H), 7.41 (s, 1H), 7.48 (d, 1H, J=8.0 Hz),7.67 (t, 1H, J=7.5 Hz), 8.66 (d, 2H, J=5.0 Hz), 11.27 (s, 1H).