Water → 1-Isopropyl-1,2,3,4-tetrahydroquinoline

HRID 1263466Notes

Reaction equation

HRID 1263466 reaction equation
[NH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][CH2:2]1.[CH:11](I)([CH3:13])[CH3:12].C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O.C(OCC)(=O)C.CCCCCC>[CH:11]([N:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][CH2:2]1)([CH3:13])[CH3:12]

Participants

7

Reactant 4

HCID 962WaterHCID 6362Isopropyl iodideHCID 11430Potassium CarbonateHCID 694601,2,3,4-Tetrahydroquinoline

Product 1

HCID 155556251-Isopropyl-1,2,3,4-tetrahydroquinolineYield 72.1%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 21226206Ethyl acetate hexaneSolvent

Conditions

Temperature
60 °C

Procedure

In 60 ml of N,N-dimethylformamide were dissolved 13.8 g of 1,2,3,4-tetrahydroquinoline. To the resulting solution were added 21.1 g of isopropyl iodide and 20.6 g of potassium carbonate, followed by stirring under heat at 60° C. for 5 hours. Water was added to the reaction mixture and the resulting mixture was extracted with ethyl acetate. The organic layer was washed with saturated saline, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue so obtained was subjected to chromatography on a silica gel-column (developing solvent: 3% ethyl acetate/n-hexane), whereby 13.1 g of the title compound were obtained in the form of a colorless oil.

Workup

  1. extractionthe resulting mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated saline
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue so obtained

Sources & evidence

ORD record
ord-715352da92a34c0e8a9c88f1696b45d4
Source dataset
uspto-grants-2003_04
Patent number
US06541474B2

Reaction notes

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