Cyclofunctionalisation of ortho-alkenyl phenols: a new method for introducing the benzeneseleno-group

Abstract

ortho-Alkenyl phenols react rapidly with PhSeCl to produce derivatives of 2,3-dihydrobenzofuran or 3,4-dihydro-2H-benzo[b]pyran (depending on the nature of the ortho-substituent) in a process shown to belong to the general class of cyclofunctionalisations.