Which of the following reaction sequences con | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The conversion of an alcohol to a carboxylic acid with one additional carbon atom involves the following steps:$1$. Conversion of alcohol to alkyl

Vedclass · Accepted Answer

$PBr_3, KCN, H_3O^+$

Vedclass · Answer

(A) The conversion of an alcohol to a carboxylic acid with one additional carbon atom involves the following steps:$1$. Conversion of alcohol to alkyl bromide using $PBr_3$: $R-CH_2CH_2OH + PBr_3 \rightarrow R-CH_2CH_2Br + H_3PO_3$.$2$. Nucleophilic substitution with $KCN$ to form a nitrile: $R-CH_2CH_2Br + KCN \rightarrow R-CH_2CH_2CN + KBr$.$3$. Acidic hydrolysis of the nitrile to form a carboxylic acid: $R-CH_2CH_2CN + 2H_2O + H^+ \rightarrow R-CH_2CH_2COOH + NH_4^+$.Thus,the correct sequence is $PBr_3, KCN, H_3O^+$.

Which of the following reaction sequences converts $R-CH_2CH_2OH$ into $R-CH_2CH_2COOH$?

Similar Questions

$C_6H_5NH_2$ $\xrightarrow{NaNO_2/HCl} X$ $\xrightarrow{Cu_2(CN)_2} Y$ $\xrightarrow{H_2O/H^{+}} Z$
$Z$ is identified as :

Identify product $C$ in the following conversion sequence: $m$-Hydroxybenzaldehyde $\xrightarrow[\text{Protection of } -OH \text{ group}]{C_6H_5CH_2Cl} A$ $\xrightarrow{[O]} B$ $\xrightarrow{\text{deprotection}} C$.

$CH_3MgBr + CO_2$ $\xrightarrow{\text{Dry ether}} Y$ $\xrightarrow{H_3O^{\oplus}} Z$
Identify $Z$ from the following.

Which among the following reactions forms acid anhydride?

In the presence of an acid,the hydrolysis of methyl cyanide gives:

Vedclass Test Series

Exam Paper Generator

Online Exam Module