Article révisé par les pairs
Résumé : Pyrolysis of 9,10-14C and 9-3H phenanthrene and perhydrophenanthrene has given information on the intramolecular mechanism of the reactions. For phenanthrene, it was shown that there is a preferential rupture of the CH bond in position 9 and that light aromatic compounds are formed by ruptures both in the central and the external rings. For perhydrophenanthrene, it was demonstrated that the CC bond ruptures precede dehydrogenation, and that phenanthrene does not arise from direct dehydrogenation. © 1986.