<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A vast number of secondary amines such as tetrahydroquinoline, tryptoline, pyrrolidine, azepane, morpholine, dihydroindole, and dihydropyrrole derivatives are condensed with azomethine ylides deriving from aldehydes bearing a pendant dipolarophile.</p> </abstract>