[OH:1][CH2:2][C:3]1[CH:4]=[C:5]([C:7]([CH3:10])=[CH:8][CH:9]=1)[NH2:6].CC1C=CC(C)=CC=1N.[C:20](OC(=O)C)(=[O:22])[CH3:21].[C:27]([O-])(=[O:29])[CH3:28].[K+]>C(Cl)(Cl)Cl>[C:20]([O:1][CH2:2][C:3]1[CH:4]=[C:5]([C:7]([CH3:10])=[CH:8][CH:9]=1)[NH:6][C:27](=[O:29])[CH3:28])(=[O:22])[CH3:21]To a solution of an approximately 1:1 mixture of 3-(hydroxymethyl)-6-methylaniline, (8.05 g, 58.8 mmol) (2) and 2,5-dimethylaniline in chloroform (290 mL), was added acetic anhydride (20 mL, 206 mmol) and potassium acetate (20 g, 202 mmol). The resulting mixture was heated at reflux for 2 hours. The mixture was then concentrated and purified by a flash column chromatography (1:1 of hexane-ethyl acetate) to give the title compound (12.02 g, 92%). TLC Rf: 0.52 (ethyl acetate); MS (electrospray) 222 (M+1); 1H N MR (CDCl3) δ 2.09 (s, 3H), 2.21 (s, 3H), 2.25 (s, 3H), 5.06 (s, 2H), 7.00 (br s, 1H, NH), 7.08 (d, 1H, J=7.6 Hz), 7.18 (d, 1H, J=7.6 Hz), 7.81 (s, 1H).
読み込み中…
