Intramolecular addition of N,N-disubstitute hydroxylamines to unactiva
ted olefins was used to prepare an indolizine, a pyrrolo[2,1-a]isoquin
oline, a 1,8-diazaspiro[4.5]decane, a cyclopenta[b]pyrrole, and an iso
indoline. A pyrrolizine and a 1-azabicyclo[2.2.1] heptane were synthes
ized from acyclic precursors by two consecutive reverse Cope eliminati
on reactions.