G. Pandey et al., PHOTOINDUCED ELECTRON-TRANSFER (PET) PROMOTED CYCLIZATIONS OF 1-[N-ALKYL-N-(TRIMETHYLSILYL)METHYL]AMINES TETHERED TO PROXIMATE OLEFIN - MECHANISTIC AND SYNTHETIC PERSPECTIVES, Tetrahedron, 50(27), 1994, pp. 8185-8194
Upon PET reaction, amines of type 1 undergo efficient cyclisations to
produce pyrrolidines and piperidines. Mechanistically, involvement of
delocalised alpha-silylmethyl amine radical cation as reactive interme
diate in such cyclisations are described.