Reversal of regioselectivity (straight vs. cross ring closure) in the intramolecular [2+2] photocycloaddition of phenanthrene derivatives

Shigeo Kohmoto, Shugo Hisamatsu, Hakuei Mitsuhashi, Masahiro Takahashi, Hyuma Masu, Isao Azumaya, Kentaro Yamaguchi, Keiki Kishikawa
  • Organic & Biomolecular Chemistry, January 2010, Royal Society of Chemistry
  • DOI: 10.1039/c000179a