Chapter 23, Problem 23.71SP

(a)

Interpretation Introduction

Interpretation: The structure corresponding to the given IUPAC name $\text{3-Methylpentanamide}$ has to be determined.

Concept introduction:

In chemistry Structure is the arrangement of chemical bonds between atoms in a molecule.

Amide is an organic compound in which a carbonyl group $C=O$ bonded to a nitrogen atom.

There are primary, secondary and tertiary amides and this classification is based on the number of carbon atoms bonded to the nitrogen atom.

Primary amides can be named in the IUPAC system in several ways,

For simple amides the suffix – amide is added to the name of the alkyl substituent.

The suffix- amide can be used in place of the final –e in the name of the parent compound.

For secondary amides an N prefixes the compound giving the shorter carbon chain and its chain prefix name.

For tertiary amides an N, N prefixes the compound giving the two shorter carbon chains and their side chain prefix names.

(b)

Interpretation Introduction

Interpretation: The structure corresponding to the given IUPAC name $\text{N-Phenylacetamide}$ has to be determined.

Concept introduction:

In chemistry Structure is the arrangement of chemical bonds between atoms in a molecule, specifically which atoms are chemically bonded to what other atoms with what kind of chemical bond.

Amide is an organic compound in which a carbonyl group $C=O$ bonded to a nitrogen atom.

There are primary, secondary and tertiary amides and this classification is based on the number of carbon atoms bonded to the nitrogen atom.

Primary amides can be named in the IUPAC system in several ways,

For simple amides the suffix – amide is added to the name of the alkyl substituent.

The suffix- amide can be used in place of the final –e in the name of the parent compound.

For secondary amides an N prefixes the compound giving the shorter carbon chain and its chain prefix name.

For tertiary amides an N, N prefixes the compound giving the two shorter carbon chains and their side chain prefix names.

(c)

Interpretation Introduction

Interpretation: The structure corresponding to the given IUPAC name $\text{N-Ethyl-N-methylbenzamide}$ has to be determined.

Concept introduction:

In chemistry Structure is the arrangement of chemical bonds between atoms in a molecule, specifically which atoms are chemically bonded to what other atoms with what kind of chemical bond.

Amide is an organic compound in which a carbonyl group $C=O$ bonded to a nitrogen atom.

There are primary, secondary and tertiary amides and this classification is based on the number of carbon atoms bonded to the nitrogen atom.

Benzamide is an aromatic amide and its structure is,

Primary amides can be named in the IUPAC system in several ways,

For simple amides the suffix – amide is added to the name of the alkyl substituent.

The suffix- amide can be used in place of the final –e in the name of the parent compound.

For secondary amides an N prefixes the compound giving the shorter carbon chain and its chain prefix name.

For tertiary amides an N, N prefixes the compound giving the two shorter carbon chains and their side chain prefix names.