ChemInform Abstract: Stable Carbocations. Part 274. 2-Seco(1.1.1.1)pagodyl Cation. Strong Stabilization of a Trivalent Carbocation by C-C σ-Bond Hyperconjugation.
Abstract
Whereas all attempts to monoprotonate the pagodane (I) only give the known dication (II); the desired monocation (IV) is obtained either from the valence isomer (III), from chloride (Va) or from seco-pagodane (Vb).
ChemInform Abstract
Whereas all attempts to monoprotonate the pagodane (I) only give the known dication (II); the desired monocation (IV) is obtained either from the valence isomer (III), from chloride (Va) or from seco-pagodane (Vb). In superacid solution, monocation (IV) is quite stable even at 0 °C and is quenched by MeOH (VI) to give (Vc).