Dimethylamine → 3-[(Dimethylamino)methyl]-4-hydroxy-5-methoxybenzaldehyde

Participants

Reaction Steps

18.0 g (0.15 mol) of a 40% aqueous dimethylamine solution were added to 12.0 g (0.15 mol) of a 37% aqueous formaldehyde solution in 90 ml of ethanol. Then 15.2 g (0.10 mol) of 4-hydroxy-3-methoxybenzaldehyde (vanillin) were added. The reaction mixture was refluxed for 30 minutes and stirred for a further 24 hours at room temperature. Then the reaction mixture was left to stand overnight in the refrigerator at 0 to 5° C. The precipitated solid was filtered out, washed with ice-cold acetone and dried. The result was a white powder.

Provenance & Evidence