Which among the following is the strongest Br | vedclass

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(D) The basicity of an amine depends on the availability of the lone pair of electrons on the nitrogen atom. In $N$-methylpyrrole,the lone pair is inv

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Quinuclidine

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(D) The basicity of an amine depends on the availability of the lone pair of electrons on the nitrogen atom. In $N$-methylpyrrole,the lone pair is involved in aromaticity,making it very weakly basic. In acyclic amines like triethylamine and diethylamine,the nitrogen atom can undergo amine inversion,which affects its basicity. Quinuclidine is a bicyclic tertiary amine where the nitrogen atom is held in a rigid structure. Due to this rigid bicyclic structure,the lone pair on the nitrogen is highly available for protonation,and the molecule cannot undergo amine inversion,which would otherwise decrease the availability of the lone pair. Therefore,quinuclidine is the strongest Bronsted base among the given options.

Which among the following is the strongest Bronsted base?

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