Chapter 19, Problem 49E

Interpretation Introduction

(a)

Interpretation:

The systematic IUPAC name for ${\text{CH}}_3-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-\text{OH}$ is to be stated.

Concept introduction:

The systematic naming of organic compound is given by IUPAC nomenclature. The naming of organic compound is done such that the structure of the organic compound is correctly interpreted from the name.

Rules for writing IUPAC name from the structural formula are given below.

• First, identify the longest carbon chain.

• The next step is to identify the groups attached to the longest chain.

• Identify the position, location, and a number of the substituents bonded to the carbon chain.

• Use prefix di, tri, tetra if the same type of substituents is present.

• Name the substituents in alphabetical order.

Answer to Problem 49E

The systematic IUPAC name for ${\text{CH}}_3-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-\text{OH}$ is $\text{1-butanol}$.

Explanation of Solution

The given alcohol is $\underset{4}{\text{C}}{\text{H}}_3-\underset{3}{\text{C}}{\text{H}}_{\text{2}}-\underset{2}{\text{C}}{\text{H}}_{\text{2}}-\underset{1}{\text{C}}{\text{H}}_{\text{2}}-\text{OH}$.

The alcohol has four carbon atoms. Therefore, the butane will be used in the name of parent chain. The hydroxyl part of the alcohol is attached to first carbon atom. The name of the alcohol will be represented with number $1\text{-}$ in the prefix and ol in the suffix. Therefore, the name of the alcohol is $\text{1-butanol}$.

Conclusion

The name of the alcohol is $\text{1-butanol}$.

Interpretation Introduction

(b)

Interpretation:

The systematic IUPAC name for ${\text{CH}}_3-{\text{CH}}_{\text{2}}-\text{CH}\left(\text{OH}\right)-{\text{CH}}_{\text{3}}$ is to be stated.

Concept introduction:

The systematic naming of organic compound is given by IUPAC nomenclature. The naming of organic compound is done such that the structure of the organic compound is correctly interpreted from the name.

Rules for writing IUPAC name from the structural formula are given below.

• First, identify the longest carbon chain.

• The next step is to identify the groups attached to the longest chain.

• Identify the position, location, and a number of the substituents bonded to the carbon chain.

• Use prefix di, tri, tetra if the same type of substituents is present.

• Name the substituents in alphabetical order.

Answer to Problem 49E

The systematic IUPAC name for ${\text{CH}}_3-{\text{CH}}_{\text{2}}-\text{CH}\left(\text{OH}\right)-{\text{CH}}_{\text{3}}$ is $\text{2-butanol}$.

Explanation of Solution

The given alcohol is $\underset{4}{\text{C}}{\text{H}}_3-\underset{3}{\text{C}}{\text{H}}_{\text{2}}-\underset{2}{\text{C}}\text{H}\left(\text{OH}\right)-\underset{1}{\text{C}}{\text{H}}_{\text{3}}$.

The alcohol has four carbon atoms. Therefore, the butane will be used in the name of parent chain. The hydroxyl part of the alcohol is attached to second carbon atom. The name of the alcohol will be represented with number $2\text{-}$ in the prefix and ol in the suffix. Therefore, the name of the alcohol is $\text{2-butanol}$.

Conclusion

The name of the alcohol is $\text{2-butanol}$.

Interpretation Introduction

(c)

Interpretation:

The systematic IUPAC name for ${\text{CH}}_3-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-\text{OH}$ is to be stated.

Concept introduction:

The systematic naming of organic compound is given by IUPAC nomenclature. The naming of organic compound is done such that the structure of the organic compound is correctly interpreted from the name.

Rules for writing IUPAC name from the structural formula are given below.

• First, identify the longest carbon chain.

• The next step is to identify the groups attached to the longest chain.

• Identify the position, location, and a number of the substituents bonded to the carbon chain.

• Use prefix di, tri, tetra if the same type of substituents is present.

• Name the substituents in alphabetical order.

Answer to Problem 49E

The systematic IUPAC name for ${\text{CH}}_3-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{2}}-\text{OH}$ is $\text{1-butanol}$.

Explanation of Solution

The given alcohol is $\underset{4}{\text{C}}{\text{H}}_3-\underset{3}{\text{C}}{\text{H}}_{\text{2}}-\underset{2}{\text{C}}{\text{H}}_{\text{2}}-\underset{1}{\text{C}}{\text{H}}_{\text{2}}-\text{OH}$.

The alcohol has four carbon atoms. Therefore, the butane will be used in the name of parent chain. The hydroxyl part of the alcohol is attached to first carbon atom. The name of the alcohol will be represented with number $1$ in the prefix and ol in the suffix. Therefore, the name of the alcohol is $\text{1-butanol}$.

Conclusion

The name of the alcohol is $\text{1-butanol}$.

Interpretation Introduction

(d)

Interpretation:

The systematic IUPAC name for ${\text{CH}}_3-\text{CH}\left(\text{OH}\right)-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{3}}$ is to be stated.

Concept introduction:

The systematic naming of organic compound is given by IUPAC nomenclature. The naming of organic compound is done such that the structure of the organic compound is correctly interpreted from the name.

Rules for writing IUPAC name from the structural formula are given below.

• First, identify the longest carbon chain.

• The next step is to identify the groups attached to the longest chain.

• Identify the position, location, and a number of the substituents bonded to the carbon chain.

• Use prefix di, tri, tetra if the same type of substituents is present.

• Name the substituents in alphabetical order.

Answer to Problem 49E

The systematic IUPAC name for ${\text{CH}}_3-\text{CH}\left(\text{OH}\right)-{\text{CH}}_{\text{2}}-{\text{CH}}_{\text{3}}$ is $\text{2-butanol}$.

Explanation of Solution

The given alcohol is $\underset{1}{\text{C}}{\text{H}}_3-\underset{2}{\text{C}}\text{H}\left(\text{OH}\right)-\underset{3}{\text{C}}{\text{H}}_{\text{2}}-\underset{4}{\text{C}}{\text{H}}_{\text{3}}$.

The alcohol has four carbon atoms. Therefore, the butane will be used in the name of parent chain. The hydroxyl part of the alcohol is attached to the first carbon atom. The name of the alcohol will be represented with number $2$ in the prefix and ol in the suffix. Therefore, the name of the alcohol is $\text{2-butanol}$.

Conclusion

The name of the alcohol is $\text{2-butanol}$.