Reactions of carbene with 1,1-dicyclopropylethylene. A new tool to investigate radical cycloadditions
Abstract
Fluorenylidene reacts with 1,1-dicyclopropylethylene to give a cycloadduct (5) and the rearranged adduct (6) in a ratio of 10:1; dilution with decalin inverses the ratio to 1:3, which may be due to the increased amount of triplet fluorenylidene.