54. “On the mechanism of the thermal naphthalene automerization, a comment”
    Burger, U.; Mareda, J.
    Tetrahedron Lett. 1984, 25, 177-180.

The title reaction is suggested to proceed by a reversible valence isomerization via a laterally bridge benzvalene (2). No analogous behaviour is expected for pyrene.

DOI : 10.1016/S0040-4039(00)99833-2 

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