Benzyl Bromide → Tert-butyl 8-amino-1-benzyl-1,2,3,4-tetrahydro-2-oxoquinolin-3-ylcarbamate

HRID 2070126Notes

Reaction equation

HRID 2070126 reaction equation
[NH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[NH:10][C:9](=[O:12])[CH:8]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])[CH2:7]2.[H-].[Na+].[CH2:23](Br)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>CN(C)C=O>[NH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[N:10]([CH2:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[C:9](=[O:12])[CH:8]([NH:13][C:14](=[O:20])[O:15][C:16]([CH3:17])([CH3:19])[CH3:18])[CH2:7]2

Participants

5

Reactant 3

HCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 59620337Tert-butyl 8-amino-2-oxo-1,2,3,4-tetrahydroquinolin-3-ylcarbamate

Product 1

HCID 59620406Tert-butyl 8-amino-1-benzyl-1,2,3,4-tetrahydro-2-oxoquinolin-3-ylcarbamate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

tert-Butyl 8-amino-2-oxo-1,2,3,4-tetrahydroquinolin-3-ylcarbamate produced in Example 6 (10 g) was added to N,N-dimethylformamide (100 mL), and sodium hydride (1.65 g) was added thereto under cooling on ice. The mixture was stirred at room temperature for one hour. Subsequently, under cooling on ice, benzyl bromide (6.48 g) was added to the mixture, and stirring was performed at room temperature for one hour. The reaction mixture was filtered, and the filtrate was concentrated under reduced pressure, to thereby recover a residue. The residue was purified through silica gel column chromatography (ethyl acetate: n-hexane=1:2), whereby the title compound (10.8 g) was yielded.

Workup

  1. additionwas added
  2. temperatureunder cooling on ice
  3. additionwas added to the mixture
  4. stirringstirring
  5. waitwas performed at room temperature for one hour
  6. filtrationThe reaction mixture was filtered
  7. concentrationthe filtrate was concentrated under reduced pressure
  8. customto thereby recover a residue
  9. customThe residue was purified through silica gel column chromatography (ethyl acetate: n-hexane=1:2), whereby the title compound (10.8 g)
  10. customwas yielded

Sources & evidence

ORD record
ord-033c272a40a840168ee215b67c474157
Source dataset
uspto-grants-2012_10
Patent number
US08299255B2

Reaction notes

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