Addition of hydrogen cyanide (HCN) to carbony | vedclass

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Question

(A) The addition of $HCN$ to carbonyl compounds is a nucleophilic addition reaction.In this reaction,the cyanide ion $(CN^-)$ acts as the nucleophile.

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Accelerated by addition of base

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(A) The addition of $HCN$ to carbonyl compounds is a nucleophilic addition reaction.In this reaction,the cyanide ion $(CN^-)$ acts as the nucleophile.Since $HCN$ is a weak acid,it does not dissociate significantly to provide $CN^-$ ions.Adding a base (like $OH^-$) helps in the deprotonation of $HCN$ to generate a higher concentration of $CN^-$ ions $(HCN + OH^- \rightarrow CN^- + H_2O)$.Therefore,the presence of a base increases the rate of the reaction by increasing the concentration of the nucleophile.

Column-$I$	Column-$II$
$A$. Acetophenone and Benzophenone	$P$. $NaHCO_3$
$B$. Phenol and Benzoic acid	$Q$. $NaHSO_3$
$C$. Propanone and Ethanal	$R$. $I_2 / NaOH$
$D$. Acetone and Acetophenone	$S$. Fehling solution

Addition of hydrogen cyanide $(HCN)$ to carbonyl compounds is:

Similar Questions

Which of the following will undergo deprotonation most readily in a basic medium?

$CH_3-CHO$ $\xrightarrow{HCN} (A)$ $\xrightarrow{H_3O^{+}} (B)$ $\xrightarrow{\Delta} (C)$ $\xrightarrow{LiAlH_4} (D)$ $\xrightarrow{HIO_4} HCHO + (E)$. Compound $(C)$ can show geometrical isomerism. Product $(E)$ of the reaction will be:

Match the Column-$I$ with Column-$II$.

Column-$I$ Column-$II$

$A$. Acetophenone and Benzophenone $P$. $NaHCO_3$

$B$. Phenol and Benzoic acid $Q$. $NaHSO_3$

$C$. Propanone and Ethanal $R$. $I_2 / NaOH$

$D$. Acetone and Acetophenone $S$. Fehling solution

$HCHO$ was treated with a reagent $X$. The product formed upon hydrolysis in the presence of an acid gave $C_{2}H_{5}OH$. The reagent $X$ is

The major product obtained in the following reaction is

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