2-Methylpyridine → 1-Hexyl-2-[(4-piperidino)styryl]-pyridinium bromide

Beteiligte Stoffe

Reaktionsschritte

2-Picoline (2.79 g, 0.03 mole) and 1-bromo-hexane (5.0 g, 0.03 mole) were heated in an oil bath at 130° C. for five hours. The resulting oil was cooled and dissolved in methanol (40 ml). 4-Piperidinobenzaldehyde (5.67 g, 0.03 mole) and piperidine (0.25 ml) were added and the mixture was refluxed under nitrogen for two hours. The addition of about 100 ml of ether to the cold solution gave red crystals which were collected and washed to give 1-hexyl-2-[(4-piperidino)styryl]-pyridinium bromide (2.1 g), melting point 212°-214° C. (decomposition).

Herkunft & Nachweise