A number of N-(3-bromopropyl) arylamine hydrohalides have been prepared. Their behaviour with various bases has been investigated and it has been shown that, under certain conditions, these starting materials may be cyclised to N-arylazetidines, A brief study has also been made of the possibility of forming 1,4-dihydro-4-oxocyclohexa-2,5-dienespiro-2'-pyrrolidine from N-(3-bromopropyl)-p-hydroxyaniline hydrobromide.