Conformational specificity in photoinduced intramolecular 1,7-hydrogen abstraction of homonaphthoquinones with a spiro-linked dibenzocycloheptene ring
[reaction: see text] Irradiation of homonaphthoquinones with spiro-linked dibenzocycloheptene rings brings about the Norrish type II reaction to give polycyclic alcohols via a stereospecific 1,7-hydrogen abstraction of the less stable twist-boat conformer.
Kokubo
K
Department of Applied Chemistry, Faculty of Engineering, Osaka University, Toyonaka, Japan.
Kawahara
K
Takatani
T
Moriwaki
H
Kawamoto
T
Oshima
T