Bis(2-chloro-4-fluoro-5-nitrophenyl)carbonate → Bis(2-chloro-4-fluoro-5-aminophenyl)carbonate

HRID 275094노트

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HRID 275094 반응식
[Cl:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([N+:9]([O-])=O)=[CH:4][C:3]=1[O:12][C:13](=[O:26])[O:14][C:15]1[CH:20]=[C:19]([N+:21]([O-])=O)[C:18]([F:24])=[CH:17][C:16]=1[Cl:25].[H][H]>C1(C)C=CC=CC=1.[Pd]>[Cl:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([NH2:9])=[CH:4][C:3]=1[O:12][C:13](=[O:26])[O:14][C:15]1[CH:20]=[C:19]([NH2:21])[C:18]([F:24])=[CH:17][C:16]=1[Cl:25]

참가 물질

5

반응물 2

HCID 14534132Bis(2-chloro-4-fluoro-5-nitrophenyl)carbonateHCID 178418361HCID 178418361, 화합물3회

생성물 1

HCID 15766649Bis(2-chloro-4-fluoro-5-aminophenyl)carbonate수율 71.9%

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 1140Toluene용매

실험 절차

Bis(2-chloro-4-fluoro-5-nitrophenyl)carbonate (233 g, 0.57 mol), toluene (2300 ml) as a solvent, and 5% Pd/C (17.4 g) as a catalyst were put in a 5-liter round-bottom flask as equipped with a stirrer, and hydrogen gas was introduced thereinto with vigorously stirring. With progress of the reaction, the reaction system became exothermic. By introduction of hydrogen gas into the reaction system at such a rate that no hydrogen gas leaked out from the system, the reaction temperature was maintained to fall within the range of from 50° to 60° C. After reaction, the reaction mixture was heated (80° to 100° C.), and the used catalyst was taken out therefrom by filtration. The by-produced water was removed form the resulting filtrate, which was fully dried with anhydrous magnesium sulfate. The drying agent was taken out by filtration, and the solvent was removed by distillation under reduced pressure to obtain bis(2-chloro-4-fluoro-5-aminophenyl)carbonate (143 g, 0.41 mol) as a white solid. Yield: 71.9 %.

후처리

  1. customas equipped with a stirrer
  2. customWith progress of the reaction
  3. temperaturethe reaction temperature was maintained
  4. customto fall within the range of from 50° to 60° C
  5. customAfter reaction
  6. temperaturethe reaction mixture was heated (80° to 100° C.)
  7. filtrationby filtration
  8. customThe by-produced water was removed form the resulting filtrate, which
  9. dry with materialwas fully dried with anhydrous magnesium sulfate
  10. filtrationThe drying agent was taken out by filtration
  11. customthe solvent was removed by distillation under reduced pressure

출처 및 근거

ORD 기록
ord-f6b0e25e9e874d97be6a88e790b4a4dd
출처 데이터셋
uspto-grants-1995_02
특허 번호
US05391807

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