Noun
imine (plural imines)
(organic chemistry) Any of a class of organic nitrogen compounds having the general formula R2C=NR; they are tautomeric with enamines.
In the case of a primary amine, a water molecule can be eliminated from the carbinolamine intermediate to yield an imine or its trimer, a hexahydrotriazine This reaction is catalyzed by acid. Source: Internet
Hydrolysis of the imine derives N-carbamoylputrescine followed with hydrolysis of the urea to form putrescine. Source: Internet