# zum Directory-modus

The reaction rate of the radical decarboxylation of bicyclo[2.2.2]octane-1-carbaldehyde into bicyclo[2.2.2]octane is, for example, 500 to 1000 times lower than the reaction rate of a comparable reaction with an intermediately formed t-butyl radical. However, as far as the analogous ionic $SN1$ solvolysis is concerned, the reaction rate of the bicyclic reactant may be up to $10 14$ times lower.