Chapter A, Problem A.44P

Interpretation Introduction

(a)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{2, 4-dicyclopropyl-2-ethoxyhexane}$.

The root name ‘hexane’ indicates the parent chain is of six carbon atoms.

Thus, the chain is numbered as shown below:

In the IUPAC name $\text{2, 4-dicyclopropyl}$ indicates that the substituent cyclopropyl is attached to $\text{C-2}$ and $\text{C-4}$ of parent chain and the $\text{2-ethoxy}$ indicates the substituent ethoxy is attached to $\text{C-2}$ of parent chain.

Hence, the structure of $\text{2, 4-dicyclopropyl-2-ethoxyhexane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.

Interpretation Introduction

(b)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for $\text{1, 2-dichloro-1-(2-methylpropyl)-4-nitrocyclohexane}$ is as follows:

Explanation of Solution

The given IUPAC name is $\text{1, 2-dichloro-1-(2-methylpropyl)-4-nitrocyclohexane}$.

The root name cyclohexane indicates the parent is a ring of six carbon atoms.

$\text{1, 2-dichloro}$ indicates two chlorine atoms bonded to $\text{C-1}$ and $\text{C-2}$.

$\text{1-(2-methylpropyl)}$ indicates, to the propyl parent chain, a methyl group is attached to the second carbon atom and this whole substituent is attached to the $\text{C-1}$ atom of the cyclohexane ring.

$\text{4-nitro}$ indicates the nitro group attached to $\text{C-4}$ of the cyclohexane ring.

Hence, the structure of $\text{1, 2-dichloro-1-(2-methylpropyl)-4-nitrocyclohexane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.

Interpretation Introduction

(c)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{1, 3-dicyclopentyl-1, 2, 3, 4-tetramethoxycyclooctane}$.

The root name cyclooctane indicates the parent is a ring of eight carbon atoms.

$\text{1, 3-dicyclopentyl}$ indicates the presence of two cyclopentyl groups attached to $\text{C-1}$ and $\text{C-3}$ carbon atom of the cyclooctane.

$\text{1, 2, 3, 4-tetramethoxy}$ indicates four methoxy groups bonded to $\text{C-1, C-2, C-3}$ and $\text{C-4}$ carbon atoms of cyclooctane.

Hence, the structure of $\text{1, 3-dicyclopentyl-1, 2, 3, 4-tetramethoxycyclooctane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.

Interpretation Introduction

(d)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{1-cyclobutyl-4-(1, 1-dimethylethyl)-2, 4-dinitrononane}$.

The root name nonane indicates the parent is a chain of nine carbon atoms.

$\text{1-cyclobutyl}$ indicates the cyclobutyl group bonded to $\text{C-1}$ carbon atom of nonane.

$\text{4-(1, 1-dimethylethyl)}$ indicates the $\text{1, 1-dimethylethyl}$ group i.e. $\text{tert-butyl}$ group bonded to $\text{C-4}$ carbon atom of nonane.

$\text{2, 4-dinitro}$ indicates the presence of two nitro groups respectively at $\text{C-2}$ and $\text{C-4}$ carbon atoms of nonane.

Hence, the structure of $\text{1-cyclobutyl-4-(1, 1-dimethylethyl)-2, 4-dinitrononane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.

Interpretation Introduction

(e)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{1-(1, 1-dimethylbutyl)-2-ethoxy-1, 2, 3-trinitrocyclobutane}$.

The root name cyclobutane indicates the parent is a ring of four carbon atoms.

$\text{1-(1, 1-dimethylbutyl)}$ indicates the $\text{1, 1-dimethylbutyl}$ group bonded to $\text{C-1}$ carbon atom of cyclobutane ring.

$\text{2-ethoxy}$ indicates the ethoxy group bonded to $\text{C-2}$ and $\text{1, 2, 3-trinitro}$ indicates the presence of three nitro groups respectively at $\text{C-1, C-2}$ and $\text{C-3}$.

Hence, the structure of $\text{1-(1, 1-dimethylbutyl)-2-ethoxy-1, 2, 3-trinitrocyclobutane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituents.

Interpretation Introduction

(f)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{1, 2, 4-tricyclopropyl-1-(2, 2-dichloropentyl)cyclohexane}$.

The root name cyclohexane indicates the parent is a ring of six carbon atoms.

$\text{1, 2, 4-tricyclopropyl}$ indicates there are three cyclopropyl groups bonded to $\text{C-1, C-2}$ and $\text{C-4}$.

$\text{1-(2, 2-dichloropentyl)}$ indicates the substituent $\text{2, 2-dichloropentyl}$ is bonded to ring at $\text{C-1}$.

Hence, the structure of $\text{1, 2, 4-tricyclopropyl-1-(2, 2-dichloropentyl)cyclohexane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.

Interpretation Introduction

(g)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{4-(2-chloro-1-methoxyethyl)-1, 1-dinitroheptane}$.

The root name heptane indicates the parent is a chain of seven carbon atoms.

$\text{4-(2-chloro-1-methoxyethyl)}$ indicates the substituent $\text{2-chloro-1-methoxyethyl}$ bonded to parent chain at $\text{C-4}$. The structure for the substituent $\text{2-chloro-1-methoxyethyl}$ is given below:

$\text{1, 1-dinitro}$ indicates the two nitro groups bonded to parent chain at $\text{C-1}$ and $\text{C-2}$.

Hence, the structure of $\text{4-(2-chloro-1-methoxyethyl)-1, 1-dinitroheptane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.

Interpretation Introduction

(h)

Interpretation:

The structure for the given IUPAC name is to be drawn.

Concept introduction:

The root name in the IUPAC name is the parent alkane. The longest continuous carbon chain must be drawn from the root name and numbered. The substituents are attached to the desired carbon number according to locator numbers given in the IUPAC name. The prefix indicates the number of identical substituents in the molecule.

Answer to Problem A.44P

The structure for the given IUPAC name is as follows:

Explanation of Solution

The given IUPAC name is $\text{3, 3, 4-trichloro-1-cyclohexoxy-4-(1, 1-dichloroethyl)decane}$.

The root name decane indicates the parent is a chain of ten carbon atoms.

$\text{3, 3, 4-trichloro}$ indicates the presence of three chlorine atoms, two of them are bonded to $\text{C-3}$ and one is bonded to $\text{C-4}$.

$\text{1-cyclohexoxy}$ indicates the cyclohexoxy group bonded to $\text{C-1}$ and $\text{4-(1, 1-dichloroethyl)}$ indicates the substituent $\text{1, 1-dichloroethyl}$ bonded to chain at $\text{C-4}$.

Hence, the structure of $\text{3, 3, 4-trichloro-1-cyclohexoxy-4-(1, 1-dichloroethyl)decane}$ is drawn below:

Conclusion

The structure for the given molecules is drawn from the root name, prefix and locator of substituent.