Methyl 3-[(dipropylamino)carbonyl]-5-(4-methyl-1,3-oxazol-2-yl)benzoate → 3-[(Dipropylamino)carbonyl]-5-(4-methyl-1,3-oxazol-2-yl)benzoic acid
反応式
[CH2:1]([N:4]([CH2:23][CH2:24][CH3:25])[C:5]([C:7]1[CH:8]=[C:9]([CH:14]=[C:15]([C:17]2[O:18][CH:19]=[C:20]([CH3:22])[N:21]=2)[CH:16]=1)[C:10]([O:12]C)=[O:11])=[O:6])[CH2:2][CH3:3]>CO.[OH-].[K+].O>[CH2:23]([N:4]([CH2:1][CH2:2][CH3:3])[C:5]([C:7]1[CH:8]=[C:9]([CH:14]=[C:15]([C:17]2[O:18][CH:19]=[C:20]([CH3:22])[N:21]=2)[CH:16]=1)[C:10]([OH:12])=[O:11])=[O:6])[CH2:24][CH3:25]参加物
実験手順
A solution of methyl 3-[(dipropylamino)carbonyl]-5-(4-methyl-1,3-oxazol-2-yl)benzoate (118 mg, 0.34 mmol) in methanol (1 mL) and potassium hydroxide (1 mL of a 1.0 M solution in water, 1 mmol) was stirred at room temperature for 45 min. The solvent was removed under reduced pressure, the residue was dissolved in water, extracted with ethyl acetate, the aqueous layer was acidified to pH 4 with 1 N hydrochloric acid, extracted with chloroform (3×100 mL), and the combined organics were concentrated under reduced pressure to afford 3-[(dipropylamino)carbonyl]-5-(4-methyl-1,3-oxazol-2-yl)benzoic acid (110 mg): 1H NMR (300 MHz, CD3OD) δ 8.66 (d, J=1 Hz, 1H), 8.17 (d, J=1 Hz, 1H), 8.07 (d, J=1 Hz, 1H), 7.75 (d, J=1 Hz, 1H), 3.51 (t, J=7 Hz, 2H), 3.25 (t, J=7 Hz, 2H), 2.23 (s, 3H), 1.74 (d, J=7 Hz, 2H), 1.60 (d, J=7 Hz, 2H), 1.01 (t, J=7 Hz, 3H), 0.76 (t, J=7 Hz, 3H).
後処理
- customThe solvent was removed under reduced pressure
- dissolutionthe residue was dissolved in water
- extractionextracted with ethyl acetate
- extractionextracted with chloroform (3×100 mL)
- concentrationthe combined organics were concentrated under reduced pressure
出典と根拠
- ORDレコード
- ord-746336d9ac824125a782eec769bd20fa
- 出典データセット
- uspto-grants-2010_06
- 特許番号
- US07727997B2
反応ノート
読み込み中…