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Ethyl 1-(6-t-butylamino-3,5-difluoropyridin-2-yl)-8-chloro-6,7-difluoro-5-nitro-4-oxo-1,4-dihydroquinoline-3-carboxylate → 5-Amino-1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

HRID 368507
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HRID 368507 반응식
C([NH:5][C:6]1[N:11]=[C:10]([N:12]2[C:21]3[C:16](=[C:17]([N+:25]([O-])=O)[C:18]([F:24])=[C:19]([F:23])[C:20]=3[Cl:22])[C:15](=[O:28])[C:14]([C:29]([O:31]CC)=[O:30])=[CH:13]2)[C:9]([F:34])=[CH:8][C:7]=1[F:35])(C)(C)C>[Fe].C(O)=O>[NH2:25][C:17]1[C:18]([F:24])=[C:19]([F:23])[C:20]([Cl:22])=[C:21]2[C:16]=1[C:15](=[O:28])[C:14]([C:29]([OH:31])=[O:30])=[CH:13][N:12]2[C:10]1[C:9]([F:34])=[CH:8][C:7]([F:35])=[C:6]([NH2:5])[N:11]=1
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참가 물질

4

반응물 1

HCID 22121269Ethyl 1-(6-t-butylamino-3,5-difluoropyridin-2-yl)-8-chloro-6,7-difluoro-5-nitro-4-oxo-1,4-dihydroquinoline-3-carboxylate

생성물 1

HCID 221211655-Amino-1-(6-amino-3,5-difluoropyridin-2-yl)-8-chloro-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid수율 83.6%

시약·촉매·용매 2

HCID 23925Iron촉매HCID 284Formic Acid용매

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온도
85 °C

실험 절차

To 10 ml of formic acid was added 960 mg of ethyl 1-(6-t-butylamino-3,5-difluoropyridine-2-yl)-8-chloro-6,7-difluoro-5-nitro-4-oxo-1,4-dihydroquinoline-3-carboxylate together with 1.0 g of iron powder, and the mixture was stirred at 80 to 90° C. for 5 hours and 40 minutes. The insoluble content was separated by filtration through celite, and the content separated by the celite and the celite were washed with formic acid and chloroform. The filtrate and the washings were concentrated under reduced pressure. To the residue was added the 6 ml of the mixed solution of 4N hydrochloric acid and acetic acid (1:1), and the mixture was heated under reflux for 2 hours with stirring and allowed to cool. The precipitate was collected by filtration and washed with ethanol and diisopropylether successively to obtain 625 mg of the title compound as a yellow powder.

후처리

  1. customThe insoluble content was separated by filtration through celite
  2. customthe content separated by the celite
  3. washthe celite were washed with formic acid and chloroform
  4. concentrationThe filtrate and the washings were concentrated under reduced pressure
  5. additionTo the residue was added the 6 ml of the mixed solution of 4N hydrochloric acid and acetic acid (1:1)
  6. temperaturethe mixture was heated
  7. temperatureunder reflux for 2 hours
  8. stirringwith stirring
  9. temperatureto cool
  10. filtrationThe precipitate was collected by filtration
  11. washwashed with ethanol and diisopropylether successively

출처 및 근거

ORD 기록
ord-58445e950ec544d5a3eb0e9c2dd5e867
출처 데이터셋
uspto-grants-2000_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06133284

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