Photocyclisation of γ,δ- and δ, ε-unsaturated amines. Hydrogen transfer reactions via eight-membered cyclic transition states
Abstract
Photolysis 4-(N,N-dibenzylamino)-2-phenylbut-1-ene and 5-(N,N-dibenzylamino)-2-phenylpent-1-ene gave cyclisation products via 1,6- and 1,7-hydrogen shifts respectively.