ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 16, Number 3
JKCSEZ 16(3)
June 20, 1972 

The intermolecular orbital theory was applied to the Diels-Alder reactions of naphthalene, phenanthrene and 1,2-benzanthracene with maleic anhydride. The expected positions of thermal addition in the alternant hydrocarbons were in agreement with experiment. It was also possible to explain the relative proportions of two isomeric adducts with the calculated stabilization energies. Comparison of the results with paralocalization energies of Brown gave a good linear correlation.