Redox-photosensitised cleavage of indene dimers using aromatic hydrocarbon–dicyanobenzene systems; catalysis by the cation radical of aromatic hydrocarbons
Abstract
Selective photoexcitation of phenanthrene in the phenanthrene–dicyanobenzene–indene dimer–acetonitrile system resulted in the cleavage of indene dimer to give indene in a limiting quantum yield of 8·2; a mechanism is suggested involving catalysis by the cation radical of phenanthrene.