2,2-Bis-(4-chloro-phenyl)-propionic acid methyl ester → 2,2-Bis(4-chlorophenyl)propanoic acid
反応式
C[O:2][C:3](=[O:20])[C:4]([C:13]1[CH:18]=[CH:17][C:16]([Cl:19])=[CH:15][CH:14]=1)([C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[CH:8][CH:7]=1)[CH3:5]>C1COCC1.O.CO>[Cl:12][C:9]1[CH:8]=[CH:7][C:6]([C:4]([C:13]2[CH:14]=[CH:15][C:16]([Cl:19])=[CH:17][CH:18]=2)([CH3:5])[C:3]([OH:20])=[O:2])=[CH:11][CH:10]=1参加物
3
実験手順
A solution of 2,2-bis-(4-chloro-phenyl)-propionic acid methyl ester (210 mg, 0.67 mmol) in THF/water/methanol (1:1:1, 18 mL) was stirred at room temperature for 5 days then concentrated in vacuo. The residue was partitioned between ethyl acetate and 2N hydrochloric acid, then the organic phase was washed with brine, dried (MgSO4), filtered and concentrated to give the title compound (186 mg, 93%) as a yellow solid which was used without further purification. LCMS (PS-B3) Rt 2.40 min [M-CO2H]− 249.