Methyl iodide → Methyl (6-methyl-2,5-dioxo-5,6-dihydro-4H-imidazo[1,5,4-de]quinoxalin-1(2H)-yl)acetate

HRID 551071Notes

Reaction equation

HRID 551071 reaction equation
[O:1]=[C:2]1[N:6]2[CH2:7][C:8](=[O:14])[NH:9][C:10]3[CH:11]=[CH:12][CH:13]=[C:4]([C:5]=32)[N:3]1[CH2:15][C:16]([O:18][CH3:19])=[O:17].[C:20](=O)([O-])[O-].[Cs+].[Cs+].IC>CN(C=O)C>[CH3:20][N:9]1[C:10]2[CH:11]=[CH:12][CH:13]=[C:4]3[N:3]([CH2:15][C:16]([O:18][CH3:19])=[O:17])[C:2](=[O:1])[N:6]([C:5]=23)[CH2:7][C:8]1=[O:14]

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 10796Cesium carbonateHCID 86629734Methyl (2,5-di oxo-5,6-dihydro-4H-imidazo[1,5,4-de]quinoxalin-1(2H)-yl)acetate2×

Product 1

HCID 86629738Methyl (6-methyl-2,5-dioxo-5,6-dihydro-4H-imidazo[1,5,4-de]quinoxalin-1(2H)-yl)acetate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of methyl (2,5-dioxo-5,6-dihydro-4H-imidazo[1,5,4-de]quinoxalin-1(2H)-yl)acetate (300 mg, 1.15 mmol, described in Intermediate 31) in DMF (5 mL) were added cesium carbonate (748 mg, 2.3 mmol) and iodomethane (326 mg, 2.3 mmol). After 16 h, the reaction mixture was quenched with brine (20 mL) and extracted with EtOAc (50 mL). The organic layer was dried over Na2SO4, filtered, and concentrated in vacuo to give the title compound. MS: m/z=276 (M+1).

Workup

  1. customthe reaction mixture was quenched with brine (20 mL)
  2. extractionextracted with EtOAc (50 mL)
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-79052427c4204fb7bb38025a2f92f7a2
Source dataset
uspto-grants-2011_05
Patent number
US07947677B2

Reaction notes

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