Acetic Anhydride → N-(6-chloro-3-nitropyridin-2-yl)acetamide

HRID 31832

反応式

HRID 31832 の反応式
[H-].[Na+].[NH2:3][C:4]1[C:9]([N+:10]([O-:12])=[O:11])=[CH:8][CH:7]=[C:6]([Cl:13])[N:5]=1.[C:14](OC(=O)C)(=[O:16])[CH3:15]>O1CCCC1>[Cl:13][C:6]1[N:5]=[C:4]([NH:3][C:14](=[O:16])[CH3:15])[C:9]([N+:10]([O-:12])=[O:11])=[CH:8][CH:7]=1

参加物

5

反応物 3

HCID 7918Acetic AnhydrideHCID 24758Sodium hydrideHCID 27240356-Chloro-3-nitropyridin-2-ylamine

生成物 1

HCID 2783822N-(6-chloro-3-nitropyridin-2-yl)acetamide収率 8.2%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒3 回

実験手順

To a suspension of sodium hydride (120 mg, 5 mmole) in tetrahydrofuran(10 ml), a solution of 2-amino-3-nitro-6-chloropyridine (870 mg, 5 mmole) in 20 ml of tetrahydrofuran (20 ml) was added. The reaction mixture was stirred at room temperature for 30 min. A solution of acetic anhydride (377 μl, 6 mmole) in tetrahydrofuran (10 ml) was added and stirred at room temperature overnight. The reaction mixture was quenched with water and concentrated under reduced pressure. The crude product was dissolved in dichloromethane and washed with brine. The organic layer was dried with sodium sulfate and then concentrated under vacuo. The crude was purified by flash chromatography, eluting 78% hexane: 22% ethyl acetate to give a yellow product (88 mg).

後処理

  1. stirringstirred at room temperature overnight
  2. customThe reaction mixture was quenched with water
  3. concentrationconcentrated under reduced pressure
  4. dissolutionThe crude product was dissolved in dichloromethane
  5. washwashed with brine
  6. dry with materialThe organic layer was dried with sodium sulfate
  7. concentrationconcentrated under vacuo
  8. customThe crude was purified by flash chromatography
  9. washeluting 78% hexane

出典と根拠

ORDレコード
ord-ff23ce087624488a9ff18ee824f2f51f
出典データセット
uspto-grants-2008_09
特許番号
US07425557B2

関連ノート

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