In the given reaction,reagents 'X' and 'Y' re | vedclass

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Question

(A) The starting material is salicylic acid ($2$-hydroxybenzoic acid).$1$. Reaction with '$X$' leads to the acetylation of the phenolic $-OH$ group to

Vedclass · Accepted Answer

$(CH_3CO)_2O / H^{+}$ and $CH_3OH / H^{+}, \Delta$

Vedclass · Answer

(A) The starting material is salicylic acid ($2$-hydroxybenzoic acid).$1$. Reaction with '$X$' leads to the acetylation of the phenolic $-OH$ group to form aspirin (acetylsalicylic acid). The reagent used for acetylation is acetic anhydride $((CH_3CO)_2O)$ in the presence of an acid catalyst $(H^+)$.$2$. Reaction with '$Y$' leads to the esterification of the carboxylic acid $-COOH$ group to form methyl salicylate. The reagent used for esterification is methanol $(CH_3OH)$ in the presence of an acid catalyst $(H^+)$ and heat $(\Delta)$.Therefore,'$X$' is $(CH_3CO)_2O / H^{+}$ and '$Y$' is $CH_3OH / H^{+}, \Delta$.

Column-$I$	Column-$II$
$(A)$ $CF_3COOH$	$(i)$ $3.41$
$(B)$ Benzoic acid	$(ii)$ $4.76$
$(C)$ $CH_3COOH$	$(iii)$ $0.23$
$(D)$ $4$-nitrobenzoic acid	$(iv)$ $4.20$

In the given reaction,reagents '$X$' and '$Y$' respectively are:

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In the given reaction sequence: $HOOC-CH_2-CH_2-COOH$ $\xrightarrow{\Delta} (A)$ $\xrightarrow{CH_3-CH_2-NH_2/\Delta} (B)$. $(B)$ will be:

Match Column-$I$ with Column-$II$ based on the $pK_a$ values of the given carboxylic acids:
Column-$I$ Column-$II$
$(A)$ $CF_3COOH$ $(i)$ $3.41$
$(B)$ Benzoic acid $(ii)$ $4.76$
$(C)$ $CH_3COOH$ $(iii)$ $0.23$
$(D)$ $4$-nitrobenzoic acid $(iv)$ $4.20$

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