2-Bromoethanol → Ethyl 6-fluoro-7-(pyrrol-1-yl)-1-(2-hydroxyethyl)-4-oxo-1,4-dihydroquinoline-3-carboxylate

HRID 4560

反応式

HRID 4560 の反応式
[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[N:12]1[CH:16]=[CH:15][CH:14]=[CH:13]1)[N:8]=[CH:7][C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[C:5]2[OH:22].C(=O)([O-])[O-].[K+].[K+].[CH2:29](Br)[CH2:30][OH:31]>CN(C)C=O>[F:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[N:12]1[CH:16]=[CH:15][CH:14]=[CH:13]1)[N:8]([CH2:29][CH2:30][OH:31])[CH:7]=[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[C:5]2=[O:22]

参加物

5

反応物 3

HCID 108982-BromoethanolHCID 11430Potassium CarbonateHCID 178418515HCID 178418515、化合物

生成物 1

HCID 13670063Ethyl 6-fluoro-7-(pyrrol-1-yl)-1-(2-hydroxyethyl)-4-oxo-1,4-dihydroquinoline-3-carboxylate収率 45.9%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
60 °C

実験手順

A mixture of 2 g (0.0076 mol) of ethyl 6-fluoro-7-(pyrrol-1-yl)-4-hydroxyquinoline-3-caboxylate and 1.85 g (2×0.0076 mol) of potassium carbonate in 20 ml of dimethylformamide is heated for 30 minutes at 60° C. and left to cool, 3.35 g (4×0.0076 mol) of ethylene bromohydrin are added, the mixture is heated at 80°-90° C. for 10 hours, active carbon is added, the mixture is filtered hot, the filtrate is evaporated to dryness, water is added and the precipitate formed is filtered off and washed with water. It is recrystallized from dimethylformamide to give 1.2 g of a solid melting at 237°-239° C.

後処理

  1. waitleft
  2. temperatureto cool
  3. temperaturethe mixture is heated at 80°-90° C. for 10 hours
  4. additionactive carbon is added
  5. filtrationthe mixture is filtered hot
  6. customthe filtrate is evaporated to dryness, water
  7. additionis added
  8. customthe precipitate formed
  9. filtrationis filtered off
  10. washwashed with water
  11. customIt is recrystallized from dimethylformamide

出典と根拠

ORDレコード
ord-d71e37624aff4110a72e833bc5f49268
出典データセット
uspto-grants-1988_02
特許番号
US04727080

関連ノート

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