For the reaction shown below,identify the maj | vedclass

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(A) The reaction of $m$-bromoanisole with $NaNH_2$ (a strong base) proceeds via the benzyne mechanism,which is an elimination-addition mechanism.In th

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$m$-methoxyaniline,elimination-addition

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(A) The reaction of $m$-bromoanisole with $NaNH_2$ (a strong base) proceeds via the benzyne mechanism,which is an elimination-addition mechanism.In this reaction,the base removes the ortho-hydrogen relative to the bromine atom,leading to the formation of a benzyne intermediate.The methoxy group $(-OCH_3)$ is an electron-donating group by resonance. In the benzyne intermediate,the nucleophilic attack by $NH_2^-$ occurs at the position that leads to the most stable carbanion.For $m$-bromoanisole,the attack of $NH_2^-$ at the meta-position relative to the $-OCH_3$ group is favored due to the inductive effect of the methoxy group,resulting in $m$-methoxyaniline as the major product.Therefore,the product $A$ is $m$-methoxyaniline and the mechanism $R$ is elimination-addition.

For the reaction shown below,identify the major product $A$ and the reaction mechanism $R$:
$m$-bromoanisole $\xrightarrow{NaNH_2} A, R$

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For the reaction shown below,identify the major product $A$ and the reaction mechanism $R$:$m$-bromoanisole $\xrightarrow{NaNH_2} A, R$