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Water → 2-[4-[N-acetyl-N-(3-dimethylaminopropyl)amino]-3-fluorophenyl]-6,8-difluoro-5-(4-methylpentylamino)-4H-1-benzopyran-4-one

HRID 1736199
Notes
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Reaction equation

HRID 1736199 reaction equation
[C:1]([N:4]([C:11]1[CH:16]=[CH:15][C:14]([C:17]2[O:18][C:19]3[C:27]([F:28])=[CH:26][C:25]([F:29])=[C:24]([NH2:30])[C:20]=3[C:21](=[O:23])[CH:22]=2)=[CH:13][C:12]=1[F:31])[CH2:5][CH2:6][CH2:7][N:8]([CH3:10])[CH3:9])(=[O:3])[CH3:2].[H-].[Na+].Br[CH2:35][CH2:36][CH2:37][CH:38]([CH3:40])[CH3:39].O>CN(C)C=O>[C:1]([N:4]([C:11]1[CH:16]=[CH:15][C:14]([C:17]2[O:18][C:19]3[C:27]([F:28])=[CH:26][C:25]([F:29])=[C:24]([NH:30][CH2:35][CH2:36][CH2:37][CH:38]([CH3:40])[CH3:39])[C:20]=3[C:21](=[O:23])[CH:22]=2)=[CH:13][C:12]=1[F:31])[CH2:5][CH2:6][CH2:7][N:8]([CH3:9])[CH3:10])(=[O:3])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 962WaterHCID 24758Sodium hydrideHCID 69385Pentane, 1-bromo-4-methyl-HCID 194349332-[4-[N-acetyl-N-(3-dimethylaminopropyl) amino]-3-fluorophenyl]-5-amino-6,8-difluoro-4H-1-benzopyran-4-one

Product 1

HCID 194348102-[4-[N-acetyl-N-(3-dimethylaminopropyl)amino]-3-fluorophenyl]-6,8-difluoro-5-(4-methylpentylamino)-4H-1-benzopyran-4-one
Yield 49.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

1.01 g (2.33 mmol) of 2-[4-[N-acetyl-N-(3-dimethylaminopropyl) amino]-3-fluorophenyl]-5-amino-6,8-difluoro-4H-1-benzopyran-4-one obtained in Example 127 (2) was dissolved in 20 mL of dimethylformamide under argon atmosphere, 190 mg (4.75 mmol) of sodium hydride (60% oil dispersion) and 0.66 mL (4.7 mmol) of 1-bromo-4-methylpentane were added under ice-cooling and the mixture was stirred at room temperature for 1 hour. Water was added to the reaction solution and mixture was extracted twice with ethyl acetate. The organic layer was washed once with an aqueous saturated solution of sodium chloride and dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure and the residue was purified by silica gel column chromatography (chloroform:methanol=20:1-9:1) to give 595 mg of 2-[4-[N-acetyl-N-(3-dimethylaminopropyl)amino]-3-fluorophenyl]-6,8-difluoro-5-(4-methylpentylamino)-4H-1-benzopyran-4-one (yield: 49%).

Workup

  1. temperaturecooling
  2. extractionwas extracted twice with ethyl acetate
  3. washThe organic layer was washed once with an aqueous saturated solution of sodium chloride
  4. dry with materialdried over anhydrous sodium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe residue was purified by silica gel column chromatography (chloroform:methanol=20:1-9:1)

Sources & evidence

ORD record
ord-6d8b841850f947f0a0630b96157ff157
Source dataset
uspto-grants-1996_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05539112

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes