Methyl iodide → 2-[4-(8-Bromo-3-methyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-1-yl)phenyl]-2-methylpropanenitrile

HRID 1670475Notes

Reaction equation

HRID 1670475 reaction equation
[Br:1][C:2]1[CH:11]=[CH:10][C:9]2[N:8]=[CH:7][C:6]3[NH:12][C:13](=[O:26])[N:14]([C:15]4[CH:20]=[CH:19][C:18]([C:21]([CH3:25])([CH3:24])[C:22]#[N:23])=[CH:17][CH:16]=4)[C:5]=3[C:4]=2[CH:3]=1.I[CH3:28].[OH-].[Na+]>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C(Cl)Cl.O>[Br:1][C:2]1[CH:11]=[CH:10][C:9]2[N:8]=[CH:7][C:6]3[N:12]([CH3:28])[C:13](=[O:26])[N:14]([C:15]4[CH:20]=[CH:19][C:18]([C:21]([CH3:24])([CH3:25])[C:22]#[N:23])=[CH:17][CH:16]=4)[C:5]=3[C:4]=2[CH:3]=1

Participants

7

Reactant 3

HCID 6328Methyl iodide2×HCID 14798Sodium Hydroxide2×HCID 426095694-(8-Bromo-2,3-dihydro-2-oxo-1H-imidazo(4,5-c)quinolin-1-yl)-alpha,alpha-dimethylbenzeneacetonitrile

Product 1

HCID 426095702-[4-(8-Bromo-3-methyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-1-yl)phenyl]-2-methylpropanenitrile

Reagents, catalysts & solvents 3

HCID 74236Tetrabutylammonium BromideCatalystHCID 962WaterSolvent2×HCID 6344DichloromethaneSolvent

Procedure

To a solution of 3.45 g (8.47 mmol) of 2-[4-(8-bromo-2-oxo-2,3-dihydro-imidazo[4,5-c]quinolin-1-yl)-phenyl]-2-methyl-propionitrile (Example 1h), 1.8 g (12.7 mmol) of iodomethane (Fluka, Buchs, Switzerland) and 273 mg (0.847 mmol) of tetrabutylammonium bromide (Fluka, Buchs, Switzerland) in 170 ml of CH2Cl2 is added a solution of 508 mg (12.7 mmol) of NaOH (Fluka, Buchs, Switzerland) in 85 ml of H2O. The reaction mixture is stirred for 2 days and 900 mg (6.35 mmol) of iodomethane and 254 mg (6.35 mmol) of NaOH in 5 ml of H2O are added. The reaction mixture is stirred for 1 day at rt. After this time, the reaction is quenched with H2O and extracted with CH2Cl2 (2×). The organic layer is washed with brine, dried over Na2SO4, filtered and evaporated in vacuo to give the title compound as a beige solid. ES-MS: 421, 423 (M+H)+, Br pattern; analytical HPLC: tret=3.15 min (Grad 1).

Workup

  1. stirringThe reaction mixture is stirred for 1 day at rt
  2. customAfter this time, the reaction is quenched with H2O
  3. extractionextracted with CH2Cl2 (2×)
  4. washThe organic layer is washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. customevaporated in vacuo

Sources & evidence

ORD record
ord-0fee77c8f68f4e35a325cbda634ef9a5
Source dataset
uspto-grants-2011_08
Patent number
US07994170B2

Reaction notes

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