Sa. Osadchii et al., FRAGMENTATION OF -2-(5H-DIBENZO[A,D]CYCLOHEPTEN-5-YL)-1-PHENYLETHYL CATION IN SUPERACID, Russian chemical bulletin, 45(2), 1996, pp. 381-383
The -2-(5H-dibenzo[a,d]cyclohepten-5-yl)-1-phenylethyl cation generate
d under ''long life'' conditions undergoes fragmentation to afford 5H-
dibenzo[a,d]cycloheptenyl- and methylphenylhydroxycarbinyl cations but
does not undergo carbocationic cyclization.