Cyclofunctionalisation of olefinic urethanes with benzeneseleneyl reagents: a new general synthesis of nitrogen heterocycles

Abstract
Urethanes derived from ortho-alkenyl-anilines and from related compounds having a 5-amino-pentene or 6-amino-hexene system undergo cyclofunctionalisation with benzeneselenenyl halides to afford derivatives of 2,3-dihydroindole, pyrrolidine, or 1,2,3,4-tetrahydro-isoquinoline (depending on the structure of the urethane).
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