7099-25-4

Upstream product

• 95-13-6 1-indene 
• 67-56-1 methanol 
• 86-53-3 1-Cyanonaphthalene 

Downstream Products

• 95-13-6 1-indene 
• 74401-25-5 exo-1-nitro-endo-2-phenyl-1,1a,2,2a-tetrahydro-7H-cyclobutindene 
• 72261-57-5 endo-2-phenyl-1,1a,2,2a-tetrahydro-7H-cyclobutindene 
• 138089-68-6 2-phenyl-1a,2a-dihydro-7H-cyclobutindene 

Relevant academic research and scientific papers

Photoinduced electron transfer-promoted reactions using exciplex-type organic photoredox catalyst directly linking donor and acceptor arenes

Directly linked donor and acceptor arenes, such as phenanthrene/naphthalene/biphenyl and 1,3-dicyanobenzene were found to work as photoredox catalysts in the photoreactions of indene, 2,3-dimethyl-2-butene, and 4-methoxyphenylacetic acid. The new stable organic photocatalyst forms an intramolecular exciplex (excited complex) when irradiated in a polar solvent and shows redox catalyst activity, even at low concentrations. To the best of our knowledge, this is the first example of an intramolecular exciplex working as a redox catalyst.

An exceptionally stable carbocation from indene generated and trapped within Ca Y zeolite

Inclusion of indene within activated Ca Y zeolite generates a persistent dimer carbocation; the chemistry that occurs within the supercages of Ca Y is controlled by the number of Bronsted acidic sites that are generated during the activation process.

Photochemical Reactions of Aromatic Compounds. XXXIII. Photoreactions of 1-Cyanonaphthalene with Indene in Various Solvents

The stereospecific photocycloaddition of 1-cyanonaphthalene to indene occured in cyclohexane, benzene, diethyl ether, tetrahydrofuran, and ethyl acetate, giving the endo head-to-head cycloadduct as the sole 1:1-adduct.The mechanism was discussed in terms of the exciplex intermediacy.In methanol or in acetonitrile in the presence of water, the photoreaction gave the dihydrocycloadduct (8), accompanied by the formation of 2-methoxyindan and 2,2'-dimethoxy-1,1'-biindanyl or 2-indanol and 1-hydroxy-2,2'-biindanyl.In these solvents, the reactions were suggested to beinitiated by photochemical electron transfer; the methoxylated or hydroxylated compounds are formed by the nucleophilic attack of methanol or water on the indene cation.Anionic species, including the 1-cyanonaphthalene anion, were suggested to play important roles in the formation of 8.