Dimethylformamide → HCID 19804510, compound

HRID 1886125Notes

Reaction equation

HRID 1886125 reaction equation
[CH3:1][N:2]([CH3:5])[CH:3]=O.[N:6]1[C:15]2C(=[CH:11][CH:12]=[CH:13][CH:14]=2)N=C[CH:7]=1.[S:16]([O:21]C)([O:19][CH3:20])(=[O:18])=[O:17]>CCOCC>[CH3:20][O:19][S:16]([O-:21])(=[O:18])=[O:17].[CH3:1][N+:2]1[C:5]2[C:15](=[CH:14][CH:13]=[CH:12][CH:11]=2)[N:6]=[CH:7][CH:3]=1

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 6497Dimethyl SulfateHCID 7045Quinoxaline

Product 1

HCID 19804510HCID 19804510, compoundYield 68%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent

Procedure

To a one-neck, round bottom flask connected with a condensor was charged with dimethyl formamide solution (100 ml) of quinoxaline oligomers (50 mmol) and dimethyl sulfate (7.6 g, 60 mmol, 1.2 equivalence). The mixture was stirred at 90° to 110° C. for at least 10 hours. After being cooled to room temperature, it was added into an ether solution (600 ml) to complete the precipitation of the product. The precipitates were fiItered, washed with ether and dried in vacuum to give a brownish-red solid of methyl quinoxalinium methylsulfate oligomers in 68% yield.

Workup

  1. customTo a one-neck, round bottom flask connected with a condensor
  2. customthe precipitation of the product
  3. washwashed with ether
  4. customdried in vacuum

Sources & evidence

ORD record
ord-6968c1e37f304b7e86fd2a27f0ed2342
Source dataset
uspto-grants-1992_09
Patent number
US05149773

Reaction notes

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