1-Methylimidazole → 3-(3,4-Dimethoxybenzyl)-1-methylimidazolium bromide

HRID 874174Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 874174
[CH3:1][N:2]1[CH:6]=[CH:5][N:4]=[CH:3]1.[CH3:7][O:8][C:9]1[CH:10]=[C:11]([CH:14]=[CH:15][C:16]=1[O:17][CH3:18])[CH2:12][Br:13].C(OCC)C>O1CCCC1>[Br-:13].[CH3:7][O:8][C:9]1[CH:10]=[C:11]([CH:14]=[CH:15][C:16]=1[O:17][CH3:18])[CH2:12][N:4]1[CH:5]=[CH:6][N+:2]([CH3:1])=[CH:3]1

Komponenten

5

Edukt 3

HCID 13901-MethylimidazoleHCID 3283Diethyl EtherHCID 109004583,4-Dimethoxybenzyl bromide

Produkt 1

HCID 866551913-(3,4-Dimethoxybenzyl)-1-methylimidazolium bromideAusbeute 94 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

In a 25 ml one-necked flask, 0.35 g (4.26 mmol) of 1-methylimidazole is dissolved in 10 ml of tetrahydrofuran and then 1.18 g (5.12 mmol) of 3,4-dimethoxybenzyl bromide are added. After heating under reflux overnight, 50 ml of diethyl ether are added. The precipitate formed is drained and then washed with diethyl ether. 1.25 g (94%) of 3-(3,4-dimethoxybenzyl)-1-methylimidazolium bromide are thus obtained in the form of a light beige powder, used as it is in the next step, whose characteristic is the following:

Aufarbeitung

  1. temperatureAfter heating
  2. temperatureunder reflux overnight
  3. customThe precipitate formed
  4. washwashed with diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-ed04f08228f24aa2aa24e973d51b9e2b
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08980875B2

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