The raw material adipic acid was dehydrated and decarboxylated with Ba(OH)_2 to prepare cyclopentanone at first,and then cyclopentanone was reacted with ammonia in hydrogen to give the final product cyclopentylamine.

On the basis of consulting a large amount of literatures and comparing the different routes synthesizing cyclopentylamine, a new cyclopentylamine synthesis route was presented in the paper, namely, the raw material adipic acid was dehydrated and decarboxylated with Ba(OH)2 to prepare cyclopentanone at first step, and in turn the cyclopentanone obtained was reacted with.