jo062115c_si_001.pdf (22.38 kB)
Template Effects in the Formation of [2]Pseudo-rotaxanes Containing Diazapyrenium Units
journal contribution
posted on 2007-02-16, 00:00 authored by Giancarlo Doddi, Gianfranco Ercolani, Paolo Mencarelli, Giuseppe PapaThe template effects exerted by guests 14 and 15 in the ring
closure reaction of 3 have been quantitatively evaluated. The
rate largely increases in the presence of the two templates.
The results are compared with those relative to the ring
closure reaction of 1 yielding cyclobis(paraquat-p-phenylene),
2. The comparison indicates that the formation of tetracationic aromatic cycles templated by aromatic donors benefits
from the use of extended π surfaces both in the acceptor
and in the donor components.