Question

what is the unidentified product of the reaction?
select the correct answer below:

Explanation:

Step1: Analyze the reaction type

This is a hydrolysis reaction of an amide (\( \mathrm{CH_3 - CH_2 - CH_2 - CH_2 - CH_2 - \overset{O}{\overset{||}{C}} - NH_2} \)) in acidic (\( \mathrm{HCl} \)) conditions.

Step2: Recall amide hydrolysis products

In acidic hydrolysis of an amide, the products are a carboxylic acid and an ammonium salt (\( \mathrm{NH_4Cl} \) here). The general reaction is \( \mathrm{R - \overset{O}{\overset{||}{C}} - NH_2+HCl + H_2O
ightarrow R - \overset{O}{\overset{||}{C}} - OH+NH_4Cl} \). For \( \mathrm{R = CH_3 - CH_2 - CH_2 - CH_2 - CH_2 -} \), the carboxylic acid product is \( \mathrm{CH_3 - CH_2 - CH_2 - CH_2 - CH_2 - \overset{O}{\overset{||}{C}} - OH} \).

Step3: Eliminate wrong options

• Option B: The carbon - chain length does not match the starting amide (\( 6 \) carbon amide should give \( 6 \) carbon carboxylic acid, this has \( 3 \) carbons in the main chain related to the carbonyl group).
• Option C: The carbon - chain length does not match the starting amide (\( 6 \) carbon amide should give \( 6 \) carbon carboxylic acid, this has \( 4 \) carbons in the main chain related to the carbonyl group).
• Option D: This is an alcohol. Amide hydrolysis in acidic conditions does not produce an alcohol. The reaction breaks the \( \mathrm{C - N} \) bond (of the amide) not the \( \mathrm{C - C} \) bonds.

Answer:

A. \( \mathrm{CH_3 - CH_2 - CH_2 - CH_2 - CH_2 - \overset{O}{\overset{||}{C}} - OH} \)