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Acetic Acid → 5-amino-6,7-difluoro-1-[(1R,2S)-2-fluorocyclopropyl]-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

HRID 1458007
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HRID 1458007 반응식
[NH2:1][C:2]1[C:11]([F:12])=[C:10]([F:13])[C:9]([CH3:14])=[C:8]2[C:3]=1[C:4](=[O:24])[C:5]([C:19]([O:21]CC)=[O:20])=[CH:6][N:7]2[C@@H:15]1[CH2:17][C@@H:16]1[F:18].C(O)(=O)C.Cl>O>[NH2:1][C:2]1[C:11]([F:12])=[C:10]([F:13])[C:9]([CH3:14])=[C:8]2[C:3]=1[C:4](=[O:24])[C:5]([C:19]([OH:21])=[O:20])=[CH:6][N:7]2[C@@H:15]1[CH2:17][C@@H:16]1[F:18]
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참가 물질

5

반응물 3

HCID 176Acetic AcidHCID 313Hydrochloric AcidHCID 11759598Ethyl 5-amino-6,7-difluoro-[(1R,2S)-2-fluorocyclopropyl]-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylate

생성물 1

HCID 110233625-amino-6,7-difluoro-1-[(1R,2S)-2-fluorocyclopropyl]-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid수율 79%

시약·촉매·용매 1

HCID 962
Water
용매

실험 절차

A 10.43 g (30.6 mmol) portion of ethyl 5-amino-6,7-difluoro-[(1R,2S)-2-fluorocyclopropyl]-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylate was mixed with 150 ml of acetic acid and 150 ml of concentrated hydrochloric acid and then heated under reflux for 1 hour. After completion of the reaction, the reaction solution was spontaneously cooled and mixed with 700 ml of water. The thus formed crystals were collected by filtration, washed with water (100 ml×2), ethanol (300 ml×1) and ether (300 ml×1) in that order and then dried to yield 7.52 g (79%) of the title compound.

후처리

  1. temperatureheated
  2. temperatureunder reflux for 1 hour
  3. customAfter completion of the reaction
  4. temperaturethe reaction solution was spontaneously cooled
  5. filtrationThe thus formed crystals were collected by filtration
  6. washwashed with water (100 ml×2), ethanol (300 ml×1) and ether (300 ml×1) in that order
  7. customdried

출처 및 근거

ORD 기록
ord-2d795fe8efbf4ddb88450310da64d819
출처 데이터셋
uspto-grants-1998_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05849757

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