Number of equivalents of Grignard reagent (x) | vedclass

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Question

(C) The reactant contains several acidic protons and an ester group.$1$. The phenolic $-OH$ group acts as an acid and consumes $1$ mole of $PhMgBr$.$2

Vedclass · Accepted Answer

$5$

Vedclass · Answer

(C) The reactant contains several acidic protons and an ester group.$1$. The phenolic $-OH$ group acts as an acid and consumes $1$ mole of $PhMgBr$.$2$. The secondary alcoholic $-OH$ group acts as an acid and consumes $1$ mole of $PhMgBr$.$3$. The secondary amine $-NH$ group acts as an acid and consumes $1$ mole of $PhMgBr$.$4$. The ester group $(-COOCH_3)$ acts as an electrophile and reacts with $2$ moles of $PhMgBr$ to form a tertiary alcohol.Total equivalents of $PhMgBr$ required = $1 + 1 + 1 + 2 = 5$ moles.

Number of equivalents of Grignard reagent $(x)$ used in the reaction is

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