74357-26-9Relevant articles and documents
Steric Effects in Photochemical Cycloadditions of 9-Phenanthrenecarboxylates
Itoh, Hiroki,Shibata, Hirofumi,Wagatsuma, Marie,Nanjoh, Mari,Senda, Yasuhisa,et al.
, p. 340 - 343 (2007/10/02)
Efficiency of photochemical intramolecular and intermolecular cycloadditoin of 9-phenanthrenecarboxylate-anethole systems is dependent on the structure of anethole moiety.Reduction in reactivity of the anethole moiety by steric effects is explained in terms of decrease in coefficients of frontier orbitals on the double bond due to twisting of the anisyl moiety.