Water → 2-(3-Phenylpropyl)-6-bromo-1-oxo-1,2,3,4-tetrahydroisoquinoline

HRID 257046Notes

Reaction equation

HRID 257046 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[C:8](=[O:12])[NH:7][CH2:6][CH2:5]2.Br[CH2:14][CH2:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.[H-].[Na+].O>CN(C=O)C>[C:17]1([CH2:16][CH2:15][CH2:14][N:7]2[CH2:6][CH2:5][C:4]3[C:9](=[CH:10][CH:11]=[C:2]([Br:1])[CH:3]=3)[C:8]2=[O:12])[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1

Participants

6

Reactant 4

HCID 962WaterHCID 12503(3-Bromopropyl)benzeneHCID 24758Sodium hydrideHCID 218654506-Bromo-3,4-dihydro-2H-isoquinolin-1-one

Product 1

HCID 189639072-(3-Phenylpropyl)-6-bromo-1-oxo-1,2,3,4-tetrahydroisoquinoline

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 6-bromo-1-oxo-1,2,3,4-tetrahydroisoquinoline (2.82 g, 12.5 mmol) in DMF (80 ml) is added 1-bromo-3-phenylpropane (2.89 ml, 18.75 mmol), KI (200 mg, 1.25 mmol) and NaH (600 mg, 25 mmol). The reaction mixture is stirred for 3 hours and subsequently poured into H2O (300 ml). The resulting emulsion is extracted with EtOAc (2×150 mL) and the organic phase washed with 2N HCl (1×200 mL), H2O (1×200 mL), saturated NaHCO3 solution (1×200 mL), saturated NaCl solution (2×200 mL), dried over MgSO4 and concentrated in vacuo. The residue is chromatographed (silica gel, 9:1 hexane/EtOAc) to give 2-(3-phenylpropyl)-6-bromo-1-oxo-1,2,3,4-tetrahydroisoquinoline.

Workup

  1. extractionThe resulting emulsion is extracted with EtOAc (2×150 mL)
  2. washthe organic phase washed with 2N HCl (1×200 mL), H2O (1×200 mL), saturated NaHCO3 solution (1×200 mL), saturated NaCl solution (2×200 mL)
  3. dry with materialdried over MgSO4
  4. concentrationconcentrated in vacuo
  5. customThe residue is chromatographed (silica gel, 9:1 hexane/EtOAc)

Sources & evidence

ORD record
ord-c3075912c08f43ecb419c47144d9dcfb
Source dataset
uspto-grants-1993_11
Patent number
US05260316

Reaction notes

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