2-Amino-5-fluoropyridine → 7-Chloro-6-fluoro-1-(5-fluoro-pyridin-2-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic Acid Ethyl Ester

HRID 1163330노트

반응식

HRID 1163330 반응식
[CH2:1]([O:3][C:4](=[O:21])[C:5]([C:10](=[O:20])[C:11]1[CH:16]=[C:15]([F:17])[C:14]([Cl:18])=[CH:13][C:12]=1Cl)=[CH:6]OCC)[CH3:2].[NH2:22][C:23]1[CH:28]=[CH:27][C:26]([F:29])=[CH:25][N:24]=1>C(O)C>[CH2:1]([O:3][C:4]([C:5]1[C:10](=[O:20])[C:11]2[C:12](=[CH:13][C:14]([Cl:18])=[C:15]([F:17])[CH:16]=2)[N:22]([C:23]2[CH:28]=[CH:27][C:26]([F:29])=[CH:25][N:24]=2)[CH:6]=1)=[O:21])[CH3:2]

참가 물질

4

반응물 2

HCID 27377012-Amino-5-fluoropyridineHCID 53427585Ethyl 2-(2,4-dichloro-5-fluorobenzoyl)-3-ethoxyacrylate

생성물 1

HCID 672740497-Chloro-6-fluoro-1-(5-fluoro-pyridin-2-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic Acid Ethyl Ester

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

A solution of 0.747 g of 2-(2,4-dichloro-5-fluoro-benzoyl)-3-ethoxy-acrylic acid ethyl ester (2.23 mmol) and 0.250 g of 2-amino-5-fluoropyridine (2.23 mmol) in 5 ml ethanol was stirred at reflux for 25 hrs. The reaction was monitored by TLC. The ethanol was evaporated and the last traces of ethanol were distilled from an azeotrope with a mixture of 10 ml heptane and 10 ml ethyl acetate. The yellow oil was dissolved in 10 ml of THF, reacted with 120 mg of a 50% NaH suspension in oil and stirred at reflux over night. The solvent was evaporated, the residue dissolved in dichloromethane/methanol 9:1, washed with water and brine, dried over Mg sulfate, filtered and evaporated. The residue was digested in ethyl acetate, and the solid filtered.

후처리

  1. temperatureat reflux for 25 hrs
  2. customThe ethanol was evaporated
  3. distillationthe last traces of ethanol were distilled from an azeotrope with a mixture of 10 ml heptane and 10 ml ethyl acetate
  4. dissolutionThe yellow oil was dissolved in 10 ml of THF
  5. customreacted with 120 mg of a 50% NaH suspension in oil
  6. temperatureat reflux over night
  7. customThe solvent was evaporated
  8. dissolutionthe residue dissolved in dichloromethane/methanol 9:1
  9. washwashed with water and brine
  10. dry with materialdried over Mg sulfate
  11. filtrationfiltered
  12. customevaporated
  13. filtrationthe solid filtered

출처 및 근거

ORD 기록
ord-63c5a3fbb13d45b4a5eeaff8c6ec595a
출처 데이터셋
uspto-grants-2010_10
특허 번호
US07820823B2

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