Q. 14.72 - An Introduction to General, Organic, and Biological Chemistry

Question

Write the IUPAC name for each of the following: (14.6)

Step-by-Step Solution

Answer

In the IUPAC name for amides the oic acid or ic acid of the carboxylic acid is replaced with amide.

( Part a) The IUPAC name of the compound is Pentanamide.

( Part b ) The IUPAC name of this structure is $N$-butylethanamide.

(Part c)  The IUPAC name of this structure is $N, N$-dimethylpropanamide.

Step 1: Given information (Part a)

That  are given sentences are 

Amides are derivatives of carboxylic acid in which the hydroxyl group

Step 2: Explanation (Part a)

Amides are carboxylic acid derivatives in which the hydroxyl group is replaced with an amine. Amidation is a reaction that occurs when carboxylic acid reacts with a substrate. A water molecule is removed in this reaction, and the carboxylic acid and amine molecules combine to form the amide.

The carboxylic acid's oic acid or ic acid is replaced with amide in the IUPAC name for amides.

Step 3: Given information (Part b)

That are given functional group are : (a)

This structure contains 5 carbon atoms.

Step 4: Explanation (a)

This structure contains 5 carbon atoms. The IUPAC name of the compound is Pentanamide.

Step 5: Given information

That are given functional group are : (b)

In this structure the butyl group is attached to the nitrogen atom,

Step 6: Explanation (b)

(b) In this structure the butyl group is attached to the nitrogen atom, so the prefix $N$-precedes the name of amide. The IUPAC name of this structure is $N$-butylethanamide.

Step 7: Given information

That are given structural are : (c)

In this structure the two methyl group is attached to the nitrogen atom

Step 8: Explanation (c)

In this structure the two methyl group is attached to the nitrogen atom, so the prefix$N, N$ precedes the name of amide. The IUPAC name of this structure is $N, N$-dimethylpropanamide.