Water → 5-amino-7-fluoro-1-[2-(S)-fluoro-1-(R)-cyclopropyl]-1,4-dihydro-8-methyl-4-oxoquinoline-3-Carboxylic Acid

HRID 600871ノート

反応式

HRID 600871 の反応式
[NH2:1][C:2]1[CH:11]=[C:10]([F:12])[C:9]([CH3:13])=[C:8]2[C:3]=1[C:4](=[O:23])[C:5]([C:18]([O:20]CC)=[O:19])=[CH:6][N:7]2[C@@H:14]1[CH2:16][C@@H:15]1[F:17].O.S(=O)(=O)(O)O>C(O)(=O)C>[NH2:1][C:2]1[CH:11]=[C:10]([F:12])[C:9]([CH3:13])=[C:8]2[C:3]=1[C:4](=[O:23])[C:5]([C:18]([OH:20])=[O:19])=[CH:6][N:7]2[C@@H:14]1[CH2:16][C@@H:15]1[F:17]

参加物

5

反応物 3

HCID 962Water2 回HCID 1118Sulfuric AcidHCID 67270424Ethyl 5-amino-7-fluoro-1-[2-(S)-fluoro-1-(R)-cyclopropyl]-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxyl ate

生成物 1

HCID 672716015-amino-7-fluoro-1-[2-(S)-fluoro-1-(R)-cyclopropyl]-1,4-dihydro-8-methyl-4-oxoquinoline-3-Carboxylic Acid収率 82.3%

試薬・触媒・溶媒 1

HCID 176Acetic Acid溶媒

反応条件

温度
120 °C

実験手順

Ethyl 5-amino-7-fluoro-1-[2-(S)-fluoro-1-(R)-cyclopropyl]-1,4-dihydro-8-methyl-4-oxoquinoline-3-carboxylate (735 mg, 2.28 mmol) was dissolved in a 1:1 mixed solution (8 ml) of acetic acid:water, and after adding concentrated sulfuric acid (90 μl) thereto, it was stirred for 4 hours in an oil bath of 120° C. After cooling the reaction solution with ice, water (20 ml) was poured therein, and the mixed reaction solution was stirred at room temperature for 2 hours. The precipitated crystals were filtered out, washed with excess water, a small amount of cold ethanol and excess diethyl ether in that order, and then dried under a reduced pressure at 80° C. for 17 hours. 552 mg (82%) of the title compound was thereby obtained in the form of yellow crystals.

後処理

  1. additionwas poured
  2. customthe mixed reaction solution
  3. stirringwas stirred at room temperature for 2 hours
  4. filtrationThe precipitated crystals were filtered out
  5. washwashed with excess water
  6. dry with materiala small amount of cold ethanol and excess diethyl ether in that order, and then dried under a reduced pressure at 80° C. for 17 hours

出典と根拠

ORDレコード
ord-b8556ed33a384ad7bfad3ff57897d494
出典データセット
uspto-grants-2011_03
特許番号
US07902226B2

反応ノート

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