Methoxyacetyl chloride → Ethyl 2,4-bis(methoxyacetylamino)benzoate

HRID 1165882노트

반응식

HRID 1165882 반응식
[NH2:1][C:2]1[CH:12]=[C:11]([NH2:13])[CH:10]=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5].[CH3:14][O:15][CH2:16][C:17](Cl)=[O:18]>N1C=CC=CC=1>[CH3:14][O:15][CH2:16][C:17]([NH:1][C:2]1[CH:12]=[C:11]([NH:13][C:17](=[O:18])[CH2:16][O:15][CH3:14])[CH:10]=[CH:9][C:3]=1[C:4]([O:6][CH2:7][CH3:8])=[O:5])=[O:18]

참가 물질

4

반응물 2

HCID 96623Methoxyacetyl chlorideHCID 22096618Ethyl 2,4-diaminobenzoate

생성물 1

HCID 14699287Ethyl 2,4-bis(methoxyacetylamino)benzoate

시약·촉매·용매 1

HCID 1049Pyridine용매

실험 절차

To a solution of ethyl 2,4-diaminobenzoate (3.6 g) in pyridine (80 ml) is added dropwise methoxyacetyl chloride (4.0 ml) at room temperature. The mixture is stirred at room temperature for 3 hours, and thereafter, pyridine is distilled off under reduced pressure. To the residue are added water and chloroform. The organic layer is separated and washed with water and then with aqueous saturated sodium chloride solution, and dried over anhydrous sodium sulfate. The solvent is distilled off under reduced pressure, and the resulting oily substance is dissolved in ethyl acetate-hexane, and the solution is allowed to stand at -30° C. for 6 hours. The precipitated crystals are separated by filtration to give the title compound (6.0 g) having the following physical properties.

후처리

  1. distillationpyridine is distilled off under reduced pressure
  2. additionTo the residue are added water and chloroform
  3. customThe organic layer is separated
  4. washwashed with water
  5. dry with materialwith aqueous saturated sodium chloride solution, and dried over anhydrous sodium sulfate
  6. distillationThe solvent is distilled off under reduced pressure
  7. dissolutionthe resulting oily substance is dissolved in ethyl acetate-hexane
  8. waitto stand at -30° C. for 6 hours
  9. customThe precipitated crystals are separated by filtration

출처 및 근거

ORD 기록
ord-c2dba8e770cd4b999a6d31eea55abdc8
출처 데이터셋
uspto-grants-1990_03
특허 번호
US04912135

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