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Formic Acid → 1-Cyclopropyl-7-(4-formyl-3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

HRID 1638693
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인쇄 미리보기

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HRID 1638693 반응식
[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:22])=[C:11]([N:15]4[CH2:20][CH2:19][NH:18][CH:17]([CH3:21])[CH2:16]4)[C:12]=3[CH3:14])[C:7](=[O:23])[C:6]([C:24]([OH:26])=[O:25])=[CH:5]2)[CH2:3][CH2:2]1.[CH:27](O)=[O:28].C(OC(=O)C)(=O)C>O>[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:22])=[C:11]([N:15]4[CH2:20][CH2:19][N:18]([CH:27]=[O:28])[CH:17]([CH3:21])[CH2:16]4)[C:12]=3[CH3:14])[C:7](=[O:23])[C:6]([C:24]([OH:26])=[O:25])=[CH:5]2)[CH2:3][CH2:2]1
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참가 물질

5

반응물 3

HCID 284Formic AcidHCID 7918Acetic AnhydrideHCID 140525871-Cyclopropyl-7-(3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

생성물 1

HCID 156225171-Cyclopropyl-7-(4-formyl-3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

시약·촉매·용매 1

HCID 962Water용매

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온도
80 °C

실험 절차

1-Cyclopropyl-7-(3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (0.4 g) is added to a mixture of formic acid (1.7 ml) and acetic anhydride (2.2 ml) at 0° C. After the addition, the mixture is heated at 80° C. for 2 hours. To the reaction mixture is added water, and the mixture is extracted with dichloromethane. After removing the solvent by concentration, the resulting residue is recrystallized from methanol to give 1-cyclopropyl-7-(4-formyl-3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (0.13 g), as white powder, m.p. 236°-239° C.

후처리

  1. additionAfter the addition
  2. extractionthe mixture is extracted with dichloromethane
  3. customAfter removing the solvent
  4. concentrationby concentration
  5. customthe resulting residue is recrystallized from methanol

출처 및 근거

ORD 기록
ord-08f0d22b0d494b6dbeae23d2e4d274b6
출처 데이터셋
uspto-grants-1989_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04880806

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