The number of moles (x) of Grignard reagent ( | vedclass

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(C) Dimethyl phthalate contains two ester groups $(-COOCH_3)$ attached to a benzene ring.Each ester group reacts with $2$ moles of Grignard reagent $(

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(C) Dimethyl phthalate contains two ester groups $(-COOCH_3)$ attached to a benzene ring.Each ester group reacts with $2$ moles of Grignard reagent $(CH_3MgI)$.Step $1$: The first mole of $CH_3MgI$ attacks the carbonyl carbon of the ester to form a ketone intermediate,releasing $CH_3OMgI$.Step $2$: The second mole of $CH_3MgI$ attacks the ketone intermediate to form a tertiary alcohol after acidic workup.Since there are two ester groups,the total number of moles of $CH_3MgI$ required is $2 	imes 2 = 4$ moles.Therefore,$x = 4$.

The number of moles $(x)$ of Grignard reagent $(CH_3MgI)$ consumed in the reaction of dimethyl phthalate with excess $CH_3MgI$ followed by acidic workup $(H^+)$ to form the product is:

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