Ethyl iodoacetate → Ethyl (3-benzyloxycarbonylamino-6-methyl-2-oxo-1,2-dihydro-1-pyridyl)acetate

HRID 2257941ノート

反応式

HRID 2257941 の反応式
[CH2:1]([O:8][C:9]([NH:11][C:12]1[C:13](=[O:19])[NH:14][C:15]([CH3:18])=[CH:16][CH:17]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[Na+].I[CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25]>CN(C)C=O.Cl>[CH2:1]([O:8][C:9]([NH:11][C:12]1[C:13](=[O:19])[N:14]([CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])[C:15]([CH3:18])=[CH:16][CH:17]=1)=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

6

反応物 3

HCID 12183Ethyl iodoacetateHCID 24758Sodium hydrideHCID 100838403-Benzyloxycarbonylamino-6-methyl-2-pyridone

生成物 1

HCID 18323889Ethyl (3-benzyloxycarbonylamino-6-methyl-2-oxo-1,2-dihydro-1-pyridyl)acetate収率 55.5%

試薬・触媒・溶媒 2

HCID 313Hydrochloric Acid溶媒HCID 6228Dimethylformamide溶媒

実験手順

The compound of Example 13 (1.80 g, 7.0 mmole) was added to a stirred suspension of sodium hydride (0.33 g, 8.4 mmole) in dry dimethylformamide (50 mL). After 45 minutes, ethyl iodoacetate (1.43 g, 6.7 mmole) was added, and the mixture was stirred overnight, diluted with 10% hydrochloric acid (300 mL) and extracted with ethyl acetate (3×150 mL). The organic layer was washed with brine (twice), dried and evaporated. The resulting yellow, waxy solid was chromatographed, eluting with 3% ethyl acetate in dichloromethane, to give the title compound (1.28 g, 53% yield). Rf =0.52 (silica gel, 5:95 methanol:dichloromethane). Fast atom bombardment mass spectrometry confirmed the theoretical molecular weight of 344.

後処理

  1. extractionextracted with ethyl acetate (3×150 mL)
  2. washThe organic layer was washed with brine (twice),
  3. customdried
  4. customevaporated
  5. customThe resulting yellow, waxy solid was chromatographed
  6. washeluting with 3% ethyl acetate in dichloromethane

出典と根拠

ORDレコード
ord-98cf0eb1cc9e43398b5f09add95c839e
出典データセット
uspto-grants-1997_08
特許番号
US05658930

反応ノート

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