Mj. Haddadin et al., SYNTHESIS OF NOVEL HETEROCYCLIC CLEFTS DERIVED FROM TETRACYCLO[6.3.0.0(4,11).0(5,9)]UNDECANE-3,6-DIONE AND TRICYCLO-[6.3.0.0(2,6)]UNDECANE-3,11-DIONE, Heterocycles, 37(2), 1994, pp. 869-882
New molecular clefts (6a-6c), (9a), and (9b) have been prepared via ba
se promoted reactions of 3,6-diaryl-1,2,4,5-tetrazines with tetracyclo
[6.3.0.0(4,11).0(5,9)]undecane-3,6-dione (1) and with tricyclo[6.3.0.0
(2,6)]undecane-3,11-dione (10), respectively. Compounds of this type a
re of interest as a potential new class of host molecules for use in h
ost-guest complexation studies (i.e., inclusion phenomena and molecula
r recognition). The results obtained via studies of the solution elect
rochemistry of systems (6a-6c), (9a), and (9b) afforded no evidence fo
r the existence of any significant electronic interaction between oppo
sing ''arms'' in these molecular clefts.