Predict the major product of the following re | vedclass

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Question

(A) The reactant is $1,2,3$-trimethoxybenzene. When treated with excess $HI$ and heated,the methoxy groups $(-OCH_3)$ undergo cleavage to form hydroxy

Vedclass · Accepted Answer

$1,2,3-$trihydroxybenzene

Vedclass · Answer

(A) The reactant is $1,2,3$-trimethoxybenzene. When treated with excess $HI$ and heated,the methoxy groups $(-OCH_3)$ undergo cleavage to form hydroxyl groups $(-OH)$ and methyl iodide $(CH_3I)$. Since the ether linkage is between an alkyl group and an aromatic ring,the $C-O$ bond cleavage occurs at the alkyl-oxygen bond,resulting in the formation of phenol derivatives and $CH_3I$. Therefore,all three methoxy groups are converted into hydroxyl groups,yielding $1,2,3$-trihydroxybenzene (pyrogallol) as the major product.

Predict the major product of the following reaction:

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