Methyl iodide → 3-Bromo-4-[3-methyl-2,5-dioxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4,5,6,7,8-octahydro-quinazolin-4-yl]-benzonitrile

HRID 59655Notes

Reaction equation

HRID 59655 reaction equation
CI.[Br:3][C:4]1[CH:5]=[C:6]([CH:9]=[CH:10][C:11]=1[CH:12]1[C:21]2[C:20](=[O:22])[CH2:19][CH2:18][CH2:17][C:16]=2[N:15]([C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:32])([F:31])[F:30])[CH:24]=2)[C:14](=[O:33])[NH:13]1)[C:7]#[N:8].[C:34](=O)([O-])[O-].[Cs+].[Cs+].C(OCC)(=O)C>CN(C=O)C>[Br:3][C:4]1[CH:5]=[C:6]([CH:9]=[CH:10][C:11]=1[CH:12]1[C:21]2[C:20](=[O:22])[CH2:19][CH2:18][CH2:17][C:16]=2[N:15]([C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:31])([F:32])[F:30])[CH:24]=2)[C:14](=[O:33])[N:13]1[CH3:34])[C:7]#[N:8]

Participants

6

Reactant 4

HCID 6328Methyl iodideHCID 8857Ethyl AcetateHCID 10796Cesium carbonateHCID 1186921683-Bromo-4-[2,5-dioxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4,5,6,7,8-octahydro-quinazolin-4-yl]-benzonitrile2×

Product 1

HCID 1186921643-Bromo-4-[3-methyl-2,5-dioxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4,5,6,7,8-octahydro-quinazolin-4-yl]-benzonitrile

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Methyliodide (3.55 mL, 57.1 mmol) is added to a mixture of 3-bromo-4-[2,5-dioxo-1-(3-trifluoromethyl-phenyl)-1,2,3,4,5,6,7,8-octahydro-quinazolin-4-yl]-benzonitrile (INTERMEDIATE 22, 14.0 g, 28.6 mmol) and cesium carbonate (18.6 g, 57.1 mmol) in DMF (140 mL). The mixture is stirred at room temperature for 90 min. Ethyl acetate is added and the organic phase is washed with water three times, dried over MgSO4 and concentrated. The crude product is purified by flash chromatography on silica (cyclohexane/ethyl acetate 30:70). Yield: 13.4 g. ESI mass spectrum: [M+H]+=504 (bromine isotope pattern); Retention time HPLC: 0.70 min (X012_S02).

Workup

  1. washthe organic phase is washed with water three times
  2. dry with materialdried over MgSO4
  3. concentrationconcentrated
  4. customThe crude product is purified by flash chromatography on silica (cyclohexane/ethyl acetate 30:70)
  5. custom0.70 min (X012_S02)

Sources & evidence

ORD record
ord-d442f293bed9403ca84033a33caf61e9
Source dataset
uspto-grants-2016_09
Patent number
US09440930B2

Reaction notes

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