Nitrogen → Ethyl 2-(2-cyanoethyl)-3-oxobutanoate

HRID 1044734ノート

反応式

HRID 1044734 の反応式
N#N.CC[O-].[Na+].[C:7]([O:13][CH2:14][CH3:15])(=[O:12])[CH2:8][C:9]([CH3:11])=[O:10].[C:16](#[N:19])[CH:17]=[CH2:18]>>[CH2:14]([O:13][C:7](=[O:12])[CH:8]([C:9](=[O:10])[CH3:11])[CH2:18][CH2:17][C:16]#[N:19])[CH3:15]

参加物

5

反応物 4

HCID 947NitrogenHCID 7855AcrylonitrileHCID 8868Ethyl AcetoacetateHCID 2723922Sodium ethoxide

生成物 1

HCID 13328085Ethyl 2-(2-cyanoethyl)-3-oxobutanoate

実験手順

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), to sodium ethylate (prepared from 62 mg sodium in 8 mL of EtOH) was added ethyl acetoacetate (9.7 mL, 76.1 mmol). Acrylonitrile (5 mL, 76.1 mmol) was then added dropwise at 40-45° C. and the reaction mixture was stirred at this temperature overnight. Ethanol was removed and the residue washed with 65 mL of water containing 3.5 mL of acetic acid, diluted with CH2Cl2 and dried over Na2SO4, filtered and concentrated under reduced pressure. The crude residue was distilled (bp=95-105° C. at 1 atm) to give the title compound. TLC:rf (7:3 hept-EA)=0.29.

後処理

  1. customEthanol was removed
  2. washthe residue washed with 65 mL of water containing 3.5 mL of acetic acid
  3. additiondiluted with CH2Cl2
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. distillationThe crude residue was distilled (bp=95-105° C. at 1 atm)

出典と根拠

ORDレコード
ord-558c5b562031494897346cb06ae86c78
出典データセット
uspto-grants-2013_10
特許番号
US08563714B2

反応ノート

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