Lithium Hydroxide → US9249085, I(al)
反応式
[F:1][C:2]1[CH:3]=[C:4]([C:8]2[CH:9]=[C:10]([CH3:34])[C:11]([O:32][CH3:33])=[C:12]([CH2:14][NH:15][C:16]3[C:17]([CH3:31])=[C:18]([CH:27]=[CH:28][C:29]=3[CH3:30])[O:19][CH2:20][C:21]([O:23]C(C)C)=[O:22])[CH:13]=2)[CH:5]=[CH:6][CH:7]=1.[Li+].[OH-]>C1COCC1>[F:1][C:2]1[CH:3]=[C:4]([C:8]2[CH:9]=[C:10]([CH3:34])[C:11]([O:32][CH3:33])=[C:12]([CH2:14][NH:15][C:16]3[C:17]([CH3:31])=[C:18]([CH:27]=[CH:28][C:29]=3[CH3:30])[O:19][CH2:20][C:21]([OH:23])=[O:22])[CH:13]=2)[CH:5]=[CH:6][CH:7]=1参加物
4
実験手順
To a solution of isopropyl 2-[3-[[5-(3-fluorophenyl)-2-methoxy-3-methyl-phenyl]methylamino]-2,4-dimethyl-phenoxy]acetate (155 mg, 0.33 mmol, 1.0 eq) in THF (4 mL) was added LiOH (2M aqueous solution, 4 mL, 8 mmol). The reaction mixture was stirred at room temperature for 2 h then the THF was removed under reduced pressure. The aqueous solution that remained was diluted with water and the pH adjusted to 4-6 with diluted HCl. The solid precipitate that formed was collected by filtration, washed with water and dried in vacuo to give a partially purified product. This material was further purified by preparative HPLC to give the title compound as a yellow solid (30 mg, 21%).