Discovery of Deep-Seated Skeletal Rearrangements in the Photocyclizations of Some <i>tert</i>-Butyl-Substituted 1,2-Diarylethylenes
作者:Frank B. Mallory、Colleen K. Regan、Joseph M. Bohen、Clelia W. Mallory、Alyssa A. Bohen、Patrick J. Carroll
DOI:10.1021/jo501965y
日期:2015.1.2
The in-solution oxidative photocyclization of stilbenes to phenanthrenes is a well-known and synthetically valuable reaction. We report here our discovery that the oxidative photocyclization of several tert-butyl-substituted 1-styrylphenanthrenes resulted not only in the expected formation of tert-butyl-substituted picenes but also in the previously unknown rearrangement leading to the formation of tert-butyl-substituted pentahelicenes.