IONIC PATHWAYS TO 2,3-BENZOFLUORANTHENE

The protonation of 9-phenylanthracene by decay and radiolytic techniques was carried out in the gaseous phase. The intermediate, a free ion formed with an excess of vibrational energy, underwent fragmentation, intermolecular and intramolecular condensation reactions. The yields of the products are dependent on the protonation exothermicity, whose increase favours the fragmentation process. The selfcondensation reaction leads to the formation of 2,3-benzofluoranthene