title: Photochemical electrocyclization of the indolinylphenylethenes involving a C-N bond formation.
abstract: [reaction: see text] A novel oxidative photodehydrocyclization of indolinylphenylethenes to a polycyclic heteroaromatic cation with good yields was described. Starting from the trans derivative, the phototransformation is a multistep process. The process includes two photochemical reactions and a trans-cis isomerization reaction, followed by an 1-aza-1,3,5-hexatrienic electrocyclic reaction involving the formation of a C-N bond. The cyclized product gives the stable heteroaromatic cations from hydride elimination with oxygen from air or iodine.
authors: Photochemistry Center of Russian Academy of Sciences, Novatorov str., 7a, 119421 Moscow, Russia. fedorova@photonics.ru
authors: Olga A
authors: OA
authors: Fedorova
authors: Yuri V
authors: YV
authors: Fedorov
authors: Elena N
authors: EN
authors: Andryukhina
authors: Sergey P
authors: SP
authors: Gromov
authors: Michael V
authors: MV
authors: Alfimov
authors: René
authors: R
authors: Lapouyade