Sulfuric Acid → 4-Cyanobenzaldehyde

Participants

Reaction Steps

39.6 g of p-cyanobenzylamine, 42.1 g of hexamethylenetetramine and 400 ml of water were mixed and after adjusting the pH of the solvent to 2.5 by sulfuric acid, the mixture was reacted at 90° C. for 2 hours while stirring. The reaction solution was cooled to room temperature and then cooled on ice. The crystals precipitated were collected by filtration, washed with water and dried to obtain 13.2 g (yield: 33%) of p-cyanobenzaldehyde. The purity was 99.8% or more.

Provenance & Evidence