Aluminum(III) Chloride → 4-(6-Hydroxyquinazolin-2-yl)benzoic acid
反応式
C[O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[N:9]=[C:8]([C:13]1[CH:21]=[CH:20][C:16]([C:17]([OH:19])=[O:18])=[CH:15][CH:14]=1)[N:7]=[CH:6]2.[Al+3].[Cl-].[Cl-].[Cl-]>C(Cl)Cl>[OH:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[N:9]=[C:8]([C:13]1[CH:14]=[CH:15][C:16]([C:17]([OH:19])=[O:18])=[CH:20][CH:21]=1)[N:7]=[CH:6]2参加物
4
実験手順
To a suspension of 4-(6-methoxyquinazolin-2-yl)benzoic acid (220 mg, 0.785 mmol) in anhydrous CH2Cl2 (5 mL) was added AlCl3 (600 mg, 4.55 mmol), the reaction mixture was refluxed overnight. The mixture was quenched with sat.NH4Cl (10 mL), the aqueous layer was extracted with CH2Cl2/MeOH (v/v=10/1, 30 mL×3), the combined organic layer was washed with brine (30 mL), dried over Na2SO4, filtered and concentrated to give the crude product, which purified by prep-HPLC (0.1% TFA as additive) to give Compound V-1 (27 mg, yield 13%). 1H NMR (MeOD 400 MHz): δ 9.42 (s, 1H), 8.60 (d, J=8.4 Hz, 2H), 8.17 (d, J=8.4 Hz, 2H), 8.00 (d, J=9.2 Hz, 1H), 7.60 (dd, J=9.2, 2.8 Hz, 1H), 7.30 (d, J=2.8 Hz, 1H). MS (ESI): m/z 266.9 [M+H]+.