Identify the site,where attack of H^{+} is mo | vedclass

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(A) The molecule is $N$-methyl$-4-$pyridone. The nitrogen atom donates its lone pair into the ring,which causes the delocalization of electrons toward

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$a$

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(A) The molecule is $N$-methyl$-4-$pyridone. The nitrogen atom donates its lone pair into the ring,which causes the delocalization of electrons towards the oxygen atom. This results in a resonance structure where the oxygen atom carries a partial negative charge $(\delta^-)$ and the nitrogen atom carries a partial positive charge $(\delta^+)$. Due to the high electron density on the oxygen atom,it acts as the most basic site in the molecule. Therefore,the electrophilic $H^{+}$ ion will most favourably attack the oxygen atom at site $a$.

Identify the site,where attack of $H^{+}$ is most favourable.

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