Nicotinic Acid → 3-Methyl-2-[pyridine-3-carbonyl]-amino-butyric acid methyl ester

HRID 82476

反応式

HRID 82476 の反応式
[CH3:1][O:2][C:3](=[O:9])[C@H:4]([CH:6]([CH3:8])[CH3:7])[NH2:5].CN1CCOCC1.CCN=C=NCCCN(C)C.Cl.[C:29](O)(=[O:36])[C:30]1[CH:35]=[CH:34][CH:33]=[N:32][CH:31]=1>C(Cl)Cl.C(OCC)(=O)C>[CH3:1][O:2][C:3](=[O:9])[C:4]([NH2:5])([C:29]([C:30]1[CH:31]=[N:32][CH:33]=[CH:34][CH:35]=1)=[O:36])[CH:6]([CH3:8])[CH3:7]

参加物

7

反応条件

温度
25 °C

実験手順

To a solution of L-valine methylester (3.0 g, 2.29 mmol), in DCM (30 mL) were added N-methyl morpholine (11.5 mL, 11.45 mmol), EDCI.HCl (8.7 g, 45.8 mmol) and nicotinic acid (3.3 g, 27.4 mmol). The mixture was allowed to stir at room temperature (25° C.) over 3 h under nitrogen atmosphere. The resulting mixture was diluted with ethyl acetate (200 mL), washed with water (3×100mL) and dried over sodium sulphate. The crude product obtained upon evaporation of the solvent was further purified by silica gel column chromatography to obtain required product as sticky solid (2.0 g, 38%).

後処理

  1. washwashed with water (3×100mL)
  2. dry with materialdried over sodium sulphate
  3. customThe crude product obtained upon evaporation of the solvent
  4. customwas further purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-c149b7e51eb84d4c872955058ddfdce3
出典データセット
uspto-grants-2014_09
特許番号
US08846721B2

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