反应详情

3-methoxybenzoyl chloride (2.06 ml, 14.65 mmol), 1,2-dimethoxybenzene (1.87 ml, 14.65 mmol) in anhydrous methylene chloride (25 ml), and aluminum chloride (2.15 g, 16.12 mmol) were treated in the same manner as described above for the synthesis of 3-(3,4-dimethoxy-phenyl)-3-(4-methoxy-phenyl)-acrylonitrile. The crude was purified via flash column chromatography (20% EtOAc in hexane) to give (3,4-dimethoxy-phenyl)-(3-methoxy-phenyl)-methanone as a yellow oil (4.39 g, 100%); 1HNMR (CDCl3) δ 7.50 (d, J=1 Hz, 1H, Ar), 7.42-7.30 (m, 4H, Ar), 7.14-7.09 (m, 1H, Ar), 6.90 (d, J=8 Hz, 1H, Ar), 3.96 (s, 3H, OCH3), 3.95 (s, 6H, 2OCH3), 3.86 (s, 3H, OCH3); 13C NMR (CDCl3) δ 195.4, 159.6, 153.1, 149.1, 139.7, 130.3, 129.2, 125.6, 122.5, 118.3, 114.4, 112.3, 109.9, 56.2, 56.2, 55.6; Anal. Calcd. For C16H16O4: C, 70.58; H, 5.92. Found: C, 70.38; H, 5.99; N, <0.05. The product was carried over to the next step.

1. customThe crude was purified via flash column chromatography (20% EtOAc in hexane)