Hydrochloric Acid → 1,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-7-(3-amino-1-pyrrolidinyl)-1-ethyl-6-fluoro-4-oxo-, monohydrochloride

HRID 1759552ノート

反応式

HRID 1759552 の反応式
C([NH:4][CH:5]1[CH2:9][CH2:8][N:7]([C:10]2[N:19]=[C:18]3[C:13]([C:14](=[O:25])[C:15]([C:22]([OH:24])=[O:23])=[CH:16][N:17]3[CH2:20][CH3:21])=[CH:12][C:11]=2[F:26])[CH2:6]1)(=O)C.[ClH:27]>>[ClH:27].[NH2:4][CH:5]1[CH2:9][CH2:8][N:7]([C:10]2[N:19]=[C:18]3[C:13]([C:14](=[O:25])[C:15]([C:22]([OH:24])=[O:23])=[CH:16][N:17]3[CH2:20][CH3:21])=[CH:12][C:11]=2[F:26])[CH2:6]1

参加物

3

反応物 2

HCID 313Hydrochloric AcidHCID 130411377-[3-(Acetylamino)-1-pyrrolidinyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid

生成物 1

HCID 30614691,8-Naphthyridine-3-carboxylic acid, 1,4-dihydro-7-(3-amino-1-pyrrolidinyl)-1-ethyl-6-fluoro-4-oxo-, monohydrochloride

実験手順

A mixture of 7-(3-acetylamino-1-pyrrolidinyl)-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid (1.81 g) in 20% hydrochloric acid (20 ml) was heated under reflux for 3 hours with stirring. The mixture was concentrated to dryness under reduced pressure and then ethanol was added to the residue. After cooling the mixture, the resulting solid was collected and recrystallized from ethanol-water to yield 1.64 g of 7-(3-amino-1-pyrrolidinyl)-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid hydrochloride (Compound 1), m.p. 285°-290° C. (decomp.).

後処理

  1. temperaturewas heated
  2. temperatureunder reflux for 3 hours
  3. concentrationThe mixture was concentrated to dryness under reduced pressure
  4. additionethanol was added to the residue
  5. temperatureAfter cooling the mixture
  6. customthe resulting solid was collected
  7. customrecrystallized from ethanol-water

出典と根拠

ORDレコード
ord-8a131d4acf5448daaa9fa1f1ddb09bd5
出典データセット
uspto-grants-1982_07
特許番号
US04341784

反応ノート

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