ChemInform Abstract: Photoreaction of Halomethyl Substituted Benzocyclic Ketones with Amines: Radical Cyclization and Ring Expansion Reactions Promoted Through Photoinduced Electron‐Transfer Processes.

Abstract

1998 photochemistry, radiation chemistry, chemoluminescence photochemistry, radiation chemistry, chemoluminescence O 0160 -045Photoreaction of Halomethyl Substituted Benzocyclic Ketones with Amines: Radical Cyclization and Ring Expansion Reactions Promoted Through Photoinduced Electron-Transfer Processes.-The title reaction of ketones like (I) affords especially the corresponding ring expansion products (II) and (V) via a photoinduced electron-transfer reaction between (I) and Tms-CH 2 -NEt 2 . -(HASEGAWA, E.; TAMURA, Y.; TOSAKA, E.; Chem.

Arylamine Synthesis Enabled by a Photocatalytic Skeletal-Rearrangement Dehydrogenative Aromatization Strategy

“…Iunderwent single electron transfer (SET) with A to cleave the C-I bond to afford Ru II and alkyl radical intermediates B. Meanwhile, intermediates B underwent an intramolecular addition-ring opening cascade to give six-membered iminium radical intermediates C,32,55,56 which would further undergo deprotonation to give allylic radical intermediates D. D could be interrupted by Co II to afford alkyl-Co III intermediates, leading to formal β-hydride elimination 57-59 to give conjugated dienamines E and Co III -H.60 Co III -H…”