137634-70-9Relevant academic research and scientific papers
Photochemical Cycloaddition of Phenanthrene-Fused Lactones to (E)-Anethole. Structural Effects and Dual Collapse Processes of an Exciplex Leading to Cycloadducts
Itoh, Hiroki,Maruyama, Syuji,Fujii, Yoshiharu,Senda, Yasuhisa,Sakuragi, Hirochika,Tokumaru, Katsumi
, p. 287 - 293 (2007/10/02)
On radiation with (E)-anethole in benzene 10-hydroxymethyl-9-phenanthrenecarboxylic acid lactone (s-trans lactone STL) gave an intermolecular cycloadduct, a cyclobutane derivative, while 8-hydroxymethyl-9-phenanthrenecarboxylic acid lactone (s-cis lactone, SCL) afforded a cyclobutane derivative and an olefinic product derived from an oxetane precursor, the carbonyl adduct.The formation of cycloadducts of highly different structures in SCL was ascribed to competitive collapse of the involved exciplex to the products.The features of intermolecular cycloaddition of the phenanthrene derivatives are discussed on the basis of results obtained from molecular orbital calculations.
Structural Effects on Photochemical Intermolecular Cycloaddition of Phenanthrenecarboxylic Lactones. Dual Collapse Processes of an Exciplex Leading to Cycloadducts
Itoh, Hiroki,Maruyama, Syuji,Fujii, Yoshiharu,Senda, Yasuhisa,Sakuragi, Hirochika,Tokumaru, Katsumi
, p. 1683 - 1686 (2007/10/02)
On irradiation with (E)-anethole in benzene 10-hydroxymethyl-9-phenanthrenecarboxylic lactone (STL) gave an intramolecular cycloadduct, a cyclobutane derivative, while 8-hydroxymethyl-9-phenanthrenecarboxylic lactone (SCL) afforded both of a cyclobutane with the same conformation and an olefinic product derived from an oxetane precursor, the carbonyl adduct.The formation of cycloadducts of highly different structures in SCL was ascribed to competitive collapse of the involved exciplex to the products.
