Novel structures of a trans-cyclooctene and trans-fused cyclopropane generated via photoisomerization of a gem-dichlorocyclopropyl-benzocycloheptenone
Abstract
Photoisomerization of the gem-dichlorobenzobicyclo[5.1.0]octenone 1(6 h, Pyrex) furnished the trans-fused cyclopropane 2 and the trans- and cis-cyclooctenes 3 and 4; single-crystal X-ray analyses defined the novel photoproduct structures.