Methanol → 4-[[(6-chloropyridin-3-yl)methyl](2-fluoroethyl)amino]furan-2(5H)-one

HRID 425742

반응식

HRID 425742 반응식
[F:1][CH2:2][CH2:3][NH:4][C:5]1[CH2:9][O:8][C:7](=[O:10])[CH:6]=1.[H-].[Na+].[Cl:13][C:14]1[CH:19]=[CH:18][C:17]([CH2:20]Cl)=[CH:16][N:15]=1.CO>O1CCCC1.C(OCC)(=O)C>[Cl:13][C:14]1[N:15]=[CH:16][C:17]([CH2:20][N:4]([CH2:3][CH2:2][F:1])[C:5]2[CH2:9][O:8][C:7](=[O:10])[CH:6]=2)=[CH:18][CH:19]=1

참가 물질

7

반응물 4

HCID 887MethanolHCID 24758Sodium hydrideHCID 1554792-Chloro-5-(chloromethyl)pyridineHCID 552864454-[(2-fluoroethyl)amino]furan-2(5H)-one

생성물 1

HCID 252274114-[[(6-chloropyridin-3-yl)methyl](2-fluoroethyl)amino]furan-2(5H)-one수율 50.9%

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매HCID 8857Ethyl Acetate용매

실험 절차

1.00 g (6.89 mmol) of 4-[(2-fluoroethyl)amino]furan-2(5H)-one (VI-1) and 0.55 g (13.78 mmol) of a 60% dispersion of sodium hydride in mineral oil in 200 ml of tetrahydrofuran are heated under reflux for 2 h. After cooling to room temperature, 2.23 g (13.78 mmol) of 2-chloro-5-chloromethylpyridine are added, and the mixture is heated under reflux for a further 4 hours. The reaction mixture is cooled to room temperature, and methanol is added. After concentration of the reaction mixture under reduced pressure, the residue is taken up in ethyl acetate and the mixture is washed successively twice with 1 N aqueous hydrochloric acid, twice with 1 N aqueous sodium hydroxide solution and once with saturated sodium chloride solution. The organic phase is then dried over sodium sulphate and concentrated under reduced pressure. Purification of the residue by column chromatography on silica gel (silica gel 60—Merck, particle size: 0.04 to 0.063 mm) using the mobile phase mixture ethyl acetate:cyclohexane (9:1) gives 949 mg (50% of theory) of 4-[[(6-chloropyridin-3-yl)methyl](2-fluoroethyl)amino]furan-2(5H)-one.

후처리

  1. temperatureunder reflux for 2 h
  2. temperaturethe mixture is heated
  3. temperatureunder reflux for a further 4 hours
  4. temperatureThe reaction mixture is cooled to room temperature
  5. washthe mixture is washed successively twice with 1 N aqueous hydrochloric acid, twice with 1 N aqueous sodium hydroxide solution and once with saturated sodium chloride solution
  6. dry with materialThe organic phase is then dried over sodium sulphate
  7. concentrationconcentrated under reduced pressure
  8. customPurification of the residue by column chromatography on silica gel (silica gel 60—Merck, particle size: 0.04 to 0.063 mm)

출처 및 근거

ORD 기록
ord-78afcdc5ba6849a4b4c0bc81dde8b06a
출처 데이터셋
uspto-grants-2012_01
특허 번호
US08106211B2

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