反应详情

Excess of gaseous hydrogen chloride was gradually introduced into a solution of 2-[2-(4-phenoxyphenoxy)ethoxy]pyridine (1.54 mg, 5.0 mmol) in toluene (50 ml) with stirring. The produced white precipitate was collected by filtration, washed with toluene several times and dried to give 2-[2-(4-phenoxyphenoxy)ethoxy]pyridinium hydrochloride (1.65 g) as white crystals. M.P., 138.1° C.

1. filtrationThe produced white precipitate was collected by filtration
2. washwashed with toluene several times
3. customdried