Water → HCID 178482755, compound

Participants

Reaction Steps

0.66 g of 1-[[p-(dimethylamino)benzylidene]-amino]-2,3-dimethylimidazolium tetrafluoroborate, 0.45 g of p-(dimethylamino)benzaldehyde and 0.34 g of piperidine are suspended in 30 ml of toluene, whereupon the suspension is heated to boiling under reflux for about 70 hours on a water separator filled with toluene which contains 5% piperidine. The precipitated material is removed by filtration under suction, washed with toluene, twice with diethyl ether and twice with water and recrystallized from methanol. There is obtained colorless 1-[[p-(dimethylamino)benzylidene]amino]-2-[p-(dimethylamino)styryl]-3-methylimidazolium tetrafluoroborate of melting point 235°-238°.

Provenance & Evidence