78239-35-7Relevant academic research and scientific papers
Generation and cycloaddition of o-quinodimethane in aqueous medium
Bieber, Lothar W.,Da Silva, Margarete F.
, p. 472 - 476 (2007/10/03)
o-Quinodimethane can be generated from α,α′-dihalo-o- xylenes using zinc in aqueous solution. In the presence of activated dienophiles cycloadducts can be obtained directly. Catalysis with tris-triphenylphosphine ruthenium(II) dichloride reduces side reac
A Facile Synthesis of Tetra- and Dihydronaphthalene Derivatives by Excimer Laser Photolysis of 1,2-Bis(substituted-methyl)benzenes in the Presence of Olefins and Acetylene
Ouchi, Akihiko,Koga, Yoshinori
, p. 7376 - 7383 (2007/10/03)
o-Quinodimethane (3A) was generated effectively by excimer laser photolyses of 1,2-bis(phenoxymethyl)benzene (1-O), 1,2-bis[(phenylthio)methyl]benzene (1-S), and 1,2-bis[(phenylseleno)methyl]-benzene (1-Se) in acetonitrile solutions via a two-photon process, which was followed by cycloaddition of 3A with several dienophlles-maleic anhydride (4a), dimethyl maleate (4b), dimethyl fumarate (4c), fumaronitrile (4d), and dimethyl acetylenedicarboxylate (4e) - to give corresponding cycloadducts 5. Three kinds of excimer lasers, namely, KrF (248 nm), XeCl (308 nm), and XeF (351 nm) excimer lasers were used for the reaction. The KrF excimer laser was found to be most effective for obtaining high consumption of 1-(O, S, Se) and yield of 5; the maximum yield of the cycloadduct obtained was 48%.
