Hydrochloric Acid → 3-[1-(2,4-Dimethoxybenzyl)-2-oxo-1,2,5,6-tetrahydro-pyridin-3-yl)-propionic acid
反応式
O[Li].O.C[O:5][C:6](=[O:27])[CH2:7][CH2:8][C:9]1[C:10](=[O:26])[N:11]([CH2:15][C:16]2[CH:21]=[CH:20][C:19]([O:22][CH3:23])=[CH:18][C:17]=2[O:24][CH3:25])[CH2:12][CH2:13][CH:14]=1.Cl>C1COCC1>[CH3:25][O:24][C:17]1[CH:18]=[C:19]([O:22][CH3:23])[CH:20]=[CH:21][C:16]=1[CH2:15][N:11]1[CH2:12][CH2:13][CH:14]=[C:9]([CH2:8][CH2:7][C:6]([OH:27])=[O:5])[C:10]1=[O:26]参加物
反応条件
- 温度
- 0 °C
実験手順
11 mg of LiOH.H2O solution (0.262 mM) was added to 0.75 ml of THF solution containing 58 mg of 3-[1-(2,4-dimethoxy benzyl)-2-oxo-1,2,5,6-tetrahydro pyridine-3-yl]-propionic acid methyl ester (d) (0.174 mM) in a dropwise manner at 0° C. After the reaction mixture was stirred for 2 hrs at 0° C. and for 1 hr at room temperature, 5% HCl was added to the mixture to pH 2. Then the mixture was extracted three times with 10 ml of ethyl acetate, the organic layer was washed with saturated NaCl solution, dried over anhydrous MgSO4, filtered and concentrated in vacuo. The resulting compound was purified with Silica gel column chromatography with methanol/chloroform (1:10) solvent mixture as an eluant to give 44 mg of the title compound (f1) (yield: 80%).
後処理
- extractionThen the mixture was extracted three times with 10 ml of ethyl acetate
- washthe organic layer was washed with saturated NaCl solution
- dry with materialdried over anhydrous MgSO4
- filtrationfiltered
- concentrationconcentrated in vacuo
- customThe resulting compound was purified with Silica gel column chromatography with methanol/chloroform (1:10) solvent mixture as an eluant
出典と根拠
- ORDレコード
- ord-82dfb9efa8cf4178968499a07dca56ba
- 出典データセット
- uspto-grants-2010_05
- 特許番号
- US07723376B2
反応ノート
読み込み中…