(B) The reaction of Grignard reagent $(CH_3MgBr)$ with dry ice $(CO_2)$ in the presence of dry ether forms an intermediate magnesium salt,$CH_3COOMgBr

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(B) The reaction of Grignard reagent $(CH_3MgBr)$ with dry ice $(CO_2)$ in the presence of dry ether forms an intermediate magnesium salt,$CH_3COOMgBr$ $(A)$.The reaction is: $CH_3MgBr + CO_2 \xrightarrow{\text{dry ether}} CH_3COOMgBr$.Upon acidic hydrolysis $(H_3O^{+})$,the intermediate $A$ yields ethanoic acid $(B)$.The reaction is: $CH_3COOMgBr + H_3O^{+} \rightarrow CH_3COOH + Mg(OH)Br$.

Class 12 Chemistry 8-2.Carboxylic acids and Their derivative Preparation of Carboxylic Acids and Their Derivatives

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Identify the product $B$ in the following reaction.
Dry ice $\xrightarrow[\text{dry ether}]{CH_3MgBr} A$ $\xrightarrow{H_3O^{+}} B$

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A
Methanoic acid
B
Ethanoic acid
C
Methanol
D
Ethanol

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8-2.Carboxylic acids and Their derivative

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Preparation of Carboxylic Acids and Their Derivatives

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Identify the product $B$ in the following reaction.Dry ice $\xrightarrow[\text{dry ether}]{CH_3MgBr} A$ $\xrightarrow{H_3O^{+}} B$

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Identify the product $B$ in the following reaction.
Dry ice $\xrightarrow[\text{dry ether}]{CH_3MgBr} A$ $\xrightarrow{H_3O^{+}} B$

$A \xrightarrow[\begin{smallmatrix} (ii) CN^{-} \\ (iii) H_{2}O/H^{+} \end{smallmatrix}]{(1) Cl_{2}, \Delta }$ $4-$Bromophenyl acetic acid.
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