Reactions of cyclic diacetylenes with ethyl diazoacetate lead to bis-cyclopropenes which can be transformed into bis-cyclopropenylium ions. By this method [n.n]cyclopropenyliophanes with n = 3,4,5 have been prepared.
Reactions of cyclic diacetylenes with ethyl diazoacetate lead to bis-cyclopropenes which can be transformed into bis-cyclopropenylium ions. By this method [n.n]cyclopropenyliophanes with n = 3,4,5 have been prepared.