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

HRID 1638692
ノート
印刷プレビュー

反応式

HRID 1638692 の反応式
[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.[C:27](OC(=O)C)(=[O:29])[CH3:28].Cl>[OH-].[Na+]>[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]([C:27](=[O:29])[CH3:28])[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
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 7918Acetic AnhydrideHCID 140525871-Cyclopropyl-7-(3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

生成物 1

HCID 156225161-Cyclopropyl-7-(4-acetyl-3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid

試薬・触媒・溶媒 1

HCID 14798Sodium Hydroxide
溶媒

実験手順

1-Cyclopropyl-7-(3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (0.3 g) is dissolved in 10% aqueous sodium hydroxide (5 ml), and thereto is added acetic anhydride (0.3 ml) at room temperature, and the mixture is stirred at the same temperature for 30 minutes. The reaction mixture is acidified with conc. hydrochloric acid and is extracted with dichloromethane. After removing the solvent by concentration, the resulting residue is purified by silica gel column chromatography (solvent, dichoromethane) and then recrystallized from methanol to give 1-cyclopropyl-7-(4-acetyl-3-methyl-1-piperazinyl)-6-fluoro-8-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (0.1 g), as white powder, m.p. 219°-221° C.

後処理

  1. extractionis extracted with dichloromethane
  2. customAfter removing the solvent
  3. concentrationby concentration
  4. customthe resulting residue is purified by silica gel column chromatography (solvent, dichoromethane)
  5. customrecrystallized from methanol

出典と根拠

ORDレコード
ord-caa7df7ca94c419c9f2bde56a81b55a1
出典データセット
uspto-grants-1989_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04880806

反応ノート

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