1,4-Dicyanobenzene → 4-(Aminomethyl)benzonitrile

Participants

Reaction Steps

168 kg of p-cyanobenzylamine crude product (p-cyanobenzylamine 92% by weight, p-xylylenediamine 8% by weight) obtained by hydrogen reduction of terephthalonitrile in the presence of sponge metal nickel catalyst was mixed with 680 kg of water while stirring at 40° C. or less and the mixture was stirred for 3 hours. The crystals which precipitated were separated by centrifugation while washing with water to obtain 155 kg of p-cyanobenzylamine hydrate (water content: 21% by weight).

Provenance & Evidence