Methyl iodide → HCID 21415702, compound

HRID 441927Notes

Reaction equation

HRID 441927 reaction equation
[CH3:1][C:2]1[C:11]([CH3:12])=[N:10][C:9]2[C:4](=[CH:5][C:6]([O:15][CH3:16])=[C:7]([O:13][CH3:14])[CH:8]=2)[N:3]=1.[CH3:17][I:18]>>[I-:18].[CH3:17][N+:10]1[C:9]2[C:4](=[CH:5][C:6]([O:15][CH3:16])=[C:7]([O:13][CH3:14])[CH:8]=2)[N:3]=[C:2]([CH3:1])[C:11]=1[CH3:12]

Participants

3

Reactant 2

HCID 6328Methyl iodideHCID 30823426,7-Dimethoxy-2,3-dimethylquinoxaline

Product 1

HCID 21415702HCID 21415702, compound

Conditions

Temperature
100 °C

Procedure

5.5 g (0.025 mol) of 2,3-dimethyl-6,7-dimethoxyquinoxaline are dissolved in 30 ml of methyl iodide, in a 100 ml stirred autoclave. This solution is warmed to 100° C over the course of 24 hours. whilst stirring, the pressure rising to about 7 atmospheres gauge. After cooling to room temperature, the yellow precipitate is filtered off, rinsed with a little dry acetone and dried. Yield about 6.5 g, corresponding to 72% of theory. Melting point 210° to 212° C (decomposition). The IR (KBr) and NMR (DMSO-d6) spectra are in agreement with the postulated structure.

Workup

  1. stirringwhilst stirring
  2. temperatureAfter cooling to room temperature
  3. filtrationthe yellow precipitate is filtered off
  4. washrinsed with a little dry acetone
  5. customdried

Sources & evidence

ORD record
ord-c9a94e0fed454d9c888594dcd4af5fea
Source dataset
uspto-grants-1977_08
Patent number
US04043819

Reaction notes

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