Lithium Hydroxide → 4-(3,4-Dichlorobenzyl)benzoic acid
反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:17]=[CH:18][C:19]=1[Cl:20])[CH2:5][C:6]1[CH:16]=[CH:15][C:9]([C:10]([O:12]CC)=[O:11])=[CH:8][CH:7]=1.[OH-].[Li+]>C1COCC1.CO.O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:17]=[CH:18][C:19]=1[Cl:20])[CH2:5][C:6]1[CH:16]=[CH:15][C:9]([C:10]([OH:12])=[O:11])=[CH:8][CH:7]=1参加物
4
実験手順
To a solution of ethyl 4-(3,4-dichlorobenzyl)benzoate (Preparation 170, 240 mg, 0.78 mmol) in THF/MeOH/water (4:3:2, 7.2 mL) was added lithium hydroxide (65 mg, 1.56 mmol) and the mixture was stirred at room temperature for 4 hours. The solvent was evaporated in vacuo and the residue acidified with 1M hydrochloric acid solution. The crude product was extracted with chloroform/methanol, and the extract dried over Na2SO4 and the solvent evaporated in vacuo to give the title compound as a white solid (160 mg, 73%)