Azabicyclo[2,2,1]heptane is more basic thantriethylamine why?.

1-Azabicyclo[2,2,1]heptane is more basic than triethylamine . Because in case of triethylamine the lone pair of electrons is less available in the latter due to rapid nitrogen inversion. Nitrogen inversion is not possible in the bicyclic amine.

Which carbocation is more stable : Benzyl or Tertiary?

Actually answers of this question is always confusing, most of the authors believe benzyl carbocation is more stable than tertiary because benzyl carbocation involves in resonance.

But some of the authors believe that Tertiary carbocation is more stable as it involves maximum +I effect and maximum hyperconjuation +H (9-alpha hydrogens). Maximum +I and +H is more dominant than +M effect. Thus tertiary carbocation is more stable than benzyl carbocation.

Important note:

Stability of Benzyl , allylic and tertiary alkyl carbocation is practically almost same .so that stabilities infact cannot be compared.

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