Reaktion #92933

Reaktionsgleichung

1-bromo-2-(2-methylphenyl)-2-oxoethane

1-methylimidazole

→

1-methyl-3-[2-(2-methylphenyl)-2-oxoethyl]-1H-imidazolium bromide

Ausbeute 34.0%

Lösungsmittel

diethyl ether

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction solvent was decanted
2. 2
   Waschenthe residue was washed with diethyl ether
3. 3
   workup.DISSOLUTIONThe residue was dissolved in hot acetonitrile
4. 4
   Temperaturthe resulting solution was cooled
5. 5
   workup.ADDITIONdiluted with diethyl ether
6. 6
   SonstigeThe solid was collected
7. 7
   Sonstigerecrystallized twice from acetonitrile/diethyl ether

Vorschrift

A solution of 4.22 g (0.02 mol) of 1-bromo-2-(2-methylphenyl)-2-oxoethane, 2.64 g (0.032 mol) of 1-methylimidazole and 60 ml of diethyl ether was stirred at room temperature for approximately 17 hours. The reaction solvent was decanted and the residue was washed with diethyl ether. The residue was dissolved in hot acetonitrile, and the resulting solution was cooled and diluted with diethyl ether. The solid was collected and recrystallized twice from acetonitrile/diethyl ether to afford 1.99 g of 1-methyl-3-[2-(2-methylphenyl)-2-oxoethyl]-1H-imidazolium bromide as white needles. (34% yield) mp=152°-154° C.

Quelle