Which reaction shows the correct major produc | vedclass

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(C) Let's analyze each reaction:$A$: Phenyl benzoate has an ester group $(-COOPh)$. The $-COO-$ group is electron-withdrawing and deactivating,directi

Vedclass · Accepted Answer

$1-$naphthoic acid lactone + $Br_2 + FeBr_3$ $\rightarrow$ $4-$bromo$-1-$naphthoic acid lactone

Vedclass · Answer

(C) Let's analyze each reaction:$A$: Phenyl benzoate has an ester group $(-COOPh)$. The $-COO-$ group is electron-withdrawing and deactivating,directing electrophilic substitution to the meta position. The product shown is para,which is incorrect.$B$: The $-CCl_3$ group is strongly electron-withdrawing due to the $-I$ effect of three chlorine atoms. It is a meta-directing group. The product shown is ortho,which is incorrect.$C$: $1-$naphthoic acid lactone (coumarin derivative) has an oxygen atom directly attached to the ring,which is ortho/para directing. The electrophilic substitution of $Br^+$ occurs at the para position relative to the oxygen,which is the $4$-position of the naphthalene ring. This is the correct major product.$D$: Halogens $(-Cl, -Br)$ are ortho/para directing due to resonance. They do not direct to the meta position. The product shown is meta,which is incorrect.Therefore,the correct reaction is $C$.

Which reaction shows the correct major product?

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