Chapter 9, Problem 36P

Name each compound depicted in the ball-and-stick models.

a. b. c.

Interpretation Introduction

(a)

Interpretation: The name of given compound depicted in the ball-and-stick model is to be stated.

Concept introduction: One should follow the given steps to give the IUPAC name of cyclic alcohol. The first step is naming of ring that contains the carbon bonded to the hydroxyl group. While naming, the -e ending of parent cycloalkane must changed to the suffix -ol. The second step is numbering of carbon chain by providing lowest number to the $-\text{OH}$ group, and applying all other rules of nomenclature.

Answer to Problem 36P

The name of the given compound depicted in the ball-and-stick model is $\text{3, 3-dimethylcyclohexanol}$.

Explanation of Solution

The given structure of alcohol is in the form of ball-and-stick model. It is converted into skeletal structure by replacing black ball with $\text{C}$, red ball with $\text{O}$, and gray ball with $\text{H}$.

Figure 1

One should follow the given steps to give the IUPAC name of cyclic alcohol. The first step is naming of ring that contains the carbon bonded to the hydroxyl group. While naming, the -e ending of parent cycloalkane must changed to the suffix -ol. The second step is numbering of carbon chain by providing lowest number to the $-\text{OH}$ group, and applying all other rules of nomenclature.

The above structure of cyclic alcohol shows that it consists of $\text{6}\text{C's}$ in the cyclic ring in which the hydroxyl group is bonded to $\text{C1}$, and two methyl groups are bonded to $\text{C3}$.

Thus, the name of the given compound depicted in the ball-and-stick model is $\text{3, 3-dimethylcyclohexanol}$.

Conclusion

The name of the given compound depicted in the ball-and-stick model is $\text{3, 3-dimethylcyclohexanol}$.

Interpretation Introduction

(b)

Interpretation: The name of given compound depicted in the ball-and-stick model is to be stated.

Concept introduction: One should follow the given steps to give the IUPAC name of ether. The first step is naming of longest chain as an alkane and the shorter chain as an alkoxy group. The second step is applying the other nomenclature rules.

Answer to Problem 36P

The name of the given compound depicted in the ball-and-stick model is $\text{1-ethoxy-2-methylpropane}$.

Explanation of Solution

The given structure of ether is in the form of ball-and-stick model. It is converted into skeletal structure by replacing black ball with $\text{C}$, red ball with $\text{O}$, and gray ball with $\text{H}$.

Figure 2

One should follow the given steps to give the IUPAC name of ether. The first step is naming of longest chain as an alkane and the shorter chain as an alkoxy group. The second step is applying the other nomenclature rules.

The above structure of ether shows that it consists of $\text{3}\text{C's}$ in the longest chain as an alkane in which at $\text{C2}$ the methyl group is substituted. Also, there are $\text{2}\text{C's}$ in the shorter chain as an alkoxy group.

Thus, the name of the given compound depicted in the ball-and-stick model is $\text{1-ethoxy-2-methylpropane}$.

Conclusion

The name of the given compound depicted in the ball-and-stick model is $\text{1-ethoxy-2-methylpropane}$.

Interpretation Introduction

(c)

Interpretation: The name of given compound depicted in the ball-and-stick model is to be stated.

Concept introduction: One should follow the given steps to give the IUPAC name of an epoxyalkane. The first step is naming of alkane chain or ring to which oxygen atom is bonded, and using the epoxy (prefix) to name epoxide. The second step is designating the location of the atoms (using two numbers) to which the oxygen atom is bonded.

Answer to Problem 36P

The name of the given compound depicted in the ball-and-stick model is $\text{1, 2-epoxy-1-ethyl-cyclopentane}$.

Explanation of Solution

The given structure of epoxide is in the form of ball-and-stick model. It is converted into skeletal structure by replacing black ball with $\text{C}$, red ball with $\text{O}$, and gray ball with $\text{H}$.

Figure 3

One should follow the given steps to give the IUPAC name of an epoxyalkane. The first step is naming of alkane chain or ring to which oxygen atom is bonded, and using the epoxy (prefix) to name epoxide. The second step is designating the location of the atoms (using two numbers) to which the oxygen atom is bonded.

The above structure of epoxide shows that the cyclopentane ring is bonded to the epoxide ring on $\text{C1}$ and $\text{C2}$ position. The one ethyl group is also bonded to $\text{C1}$ of epoxide.

Figure 4

Thus, the name of the given compound depicted in the ball-and-stick model is $\text{1, 2-epoxy-1-ethyl-cyclopentane}$.

Conclusion

The name of the given compound depicted in the ball-and-stick model is $\text{1, 2-epoxy-1-ethyl-cyclopentane}$.