Chapter 22, Problem 29A

a.

Interpretation Introduction

Interpretation:

The name of the given amine needs to be determined.

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_{\text{3}}{\text{CH}}_{\text{2}}{\text{NH}}_{\text{2}}$

Concept introduction:

The organic compounds generally contain carbon atoms. The naming of organic compounds is done by considering three main terms which are prefix, suffix and the root name. The longest chain in the compound is first identified and named that will be the root name for the compound. For example, if there are 3 carbon atoms in the longest chain, the root name will be “prop”. To determine the suffix, functional group should be identified. In case of amine, suffix amine is added to the name of the carbon chain. In the last step, side groups are identified and named. Prefix is used to give number of side groups and substituent’s present on the main carbon chain.

Explanation of Solution

The condensed formula of given amine is as follows:

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_{\text{3}}{\text{CH}}_{\text{2}}{\text{NH}}_{\text{2}}$

The structural formula for the same can be drawn as follows:

From the above structural formula, it is clear that there are 5 C atoms in the main chain.

Also, there is an amine group at 1^st position therefore; the name of the amine is pentan-1-amine.

b.

Interpretation Introduction

Interpretation:

The name of the given amine needs to be determined.

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_5{\text{CH}}_{\text{2}}{\text{NH}}_{\text{2}}$

Concept introduction:

The organic compounds generally contain carbon atoms. The naming of organic compounds is done by considering three main terms which are prefix, suffix and the root name. The longest chain in the compound is first identified and named that will be the root name for the compound. For example, if there are 3 carbon atoms in the longest chain, the root name will be “prop”. To determine the suffix, functional group should be identified. In case of amine, suffix amine is added to the name of the carbon chain. In the last step, side groups are identified and named. Prefix is used to give number of side groups and substituent’s present on the main carbon chain.

Explanation of Solution

The condensed formula of given amine is as follows:

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_5{\text{CH}}_{\text{2}}{\text{NH}}_{\text{2}}$

The structural formula for the same can be drawn as follows:

From the above structural formula, it is clear that there are 7 C atoms in the main chain.

Also, there is an amine group at 1^st position therefore; the name of the amine is heptan-1-amine.

c.

Interpretation Introduction

Interpretation:

The name of the given amine needs to be determined.

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_2\text{CH}\left({\text{NH}}_{\text{2}}\right){\text{CH}}_{\text{3}}$

Concept introduction:

The organic compounds generally contain carbon atoms. The naming of organic compounds is done by considering three main terms which are prefix, suffix and the root name. The longest chain in the compound is first identified and named that will be the root name for the compound. For example, if there are 3 carbon atoms in the longest chain, the root name will be “prop”. To determine the suffix, functional group should be identified. In case of amine, suffix amine is added to the name of the carbon chain. In the last step, side groups are identified and named. Prefix is used to give number of side groups and substituent’s present on the main carbon chain.

Explanation of Solution

The condensed formula of given amine is as follows:

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_2\text{CH}\left({\text{NH}}_{\text{2}}\right){\text{CH}}_{\text{3}}$

The structural formula for the same can be drawn as follows:

From the above structural formula, it is clear that there are 5 C atoms in the main chain.

Also, there is an amine group at 2^nd position therefore; the name of the amine is pentan-2-amine.

d.

Interpretation Introduction

Interpretation:

The name of the given amine needs to be determined.

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_8{\text{CH}}_2{\text{NH}}_{\text{2}}$

Concept introduction:

The organic compounds generally contain carbon atoms. The naming of organic compounds is done by considering three main terms which are prefix, suffix and the root name. The longest chain in the compound is first identified and named that will be the root name for the compound. For example, if there are 3 carbon atoms in the longest chain, the root name will be “prop”. To determine the suffix, functional group should be identified. In case of amine, suffix amine is added to the name of the carbon chain. In the last step, side groups are identified and named. Prefix is used to give number of side groups and substituent’s present on the main carbon chain.

Explanation of Solution

The condensed formula of given amine is as follows:

${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_8{\text{CH}}_2{\text{NH}}_{\text{2}}$

The structural formula for the same can be drawn as follows:

From the above structural formula, it is clear that there are 10 C atoms in the main chain.

Also, there is an amine group at 1^st position therefore; the name of the amine is decan-1-amine.