Chapter 19, Problem 19.28P

Give the IUPAC name for each compound.

a. ${{\text{(CH}}_{\text{3}}\text{)}}_{\text{2}}{\text{CHCH}}_{\text{2}}{\text{CH}}_{\text{2}}{\text{CO}}_{\text{2}}\text{H}$ e. h.

b. ${\text{BrCH}}_{\text{2}}\text{COOH}$

c. f. i.

d. ${\text{CH}}_{\text{3}}{\text{CH}}_2{\text{CH}}_{\text{2}}{\text{COO}}^{-}{\text{Li}}^{+}$ g. j.

Interpretation Introduction

(a)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of the parent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $4\text{-}$ methylpentanoic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 1

The above compound has a chain of five carbon atoms. The carboxylic acid is present as a functional group in the compound. One methyl group is present at the fourth carbon atom. Therefore, the name of the compound is $4\text{-}$ methylpentanoic acid.

Conclusion

The name of the compound is $4\text{-}$ methylpentanoic acid.

Interpretation Introduction

(b)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of the parent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $2\text{-}$ bromoethanoic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 2

The above compound has a chain of two carbon atoms. The carboxylic acid is present as a functional group in the compound. One bromo group is present at the second carbon atom. Therefore, the name of the compound is $2\text{-}$ bromoethanoic acid.

Conclusion

The name of the compound is $2\text{-}$ bromoethanoic acid.

Interpretation Introduction

(c)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of the parent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $4,4,5,5\text{-}$ tetramethyloctanoic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 3

The above compound has a chain of eight carbon atoms. The carboxylic acid is present as a functional group in the compound. Two methyl groups are present at thefourth carbon atom and two methyl groups are present at the fifth carbon atom. Therefore, the name of the compound is $4,4,5,5\text{-}$ tetramethyloctanoic acid.

Conclusion

The name of the compound is $4,4,5,5\text{-}$ tetramethyloctanoic acid.

Interpretation Introduction

(d)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of theparent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is lithium butanoate.

Explanation of Solution

The structure of the given compound is shown below.

Figure 4

The above compound has a chain of five carbon atoms. The compound contains the salt of carboxylic acid as a functional group. Therefore, the name of the compound is lithium butanoate.

Conclusion

The name of the compound is lithium butanoate.

Interpretation Introduction

(e)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of theparent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $1\text{-}$ ethylcyclopentanecarboxylic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 5

The above compound contains cyclopentyl ring. The carboxylic acid is present as a functional group in the compound. Ethyl group is attached to first carbon atom. Therefore, the name of the compound is $1\text{-}$ ethylcyclopentanecarboxylic acid.

Conclusion

The name of the compound is $1\text{-}$ ethylcyclopentanecarboxylic acid.

Interpretation Introduction

(f)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of the parent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $2,4\text{-}$ dimethylcyclohexanecarboxylic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 6

The above compound contains cyclohexyl ring. The carboxylic acid is present as a functional group in the compound. One methyl group is present at the second carbon atom and other at the fourth carbon atom. Therefore, the name of the compound is $2,4\text{-}$ dimethylcyclohexanecarboxylic acid.

Conclusion

The name of the compound is $2,4\text{-}$ dimethylcyclohexanecarboxylic acid.

Interpretation Introduction

(g)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of theparent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $\text{2}$-bromobenzoic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 7

The above compound contains an aromatic ring. The carboxylic acid is present as a functional group in the compound. The bromogroupis attached to second carbon atom. Therefore, the name of the compound is $\text{2}$-bromobenzoic acid.

Conclusion

The name of the compound is $\text{2}$-bromobenzoic acid.

Interpretation Introduction

(h)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of theparent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $\text{4}$-ethylbenzoic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 8

The above compound contains an aromatic ring. The carboxylic acid is present as a functional group in the compound. The ethyl group is attached to fourth carbon atom. Therefore, the name of the compound is $\text{4}$-ethylbenzoic acid.

Conclusion

The name of the compound is $\text{4}$-ethylbenzoic acid.

Interpretation Introduction

(i)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of theparent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is sodium $2\text{-}$ methylhexaneoate.

Explanation of Solution

The structure of the given compound is shown below.

Figure 9

The above compound contains the chain of six carbon atoms. The salt of a carboxylic acid is a functional group in the compound. Methyl group is attached to second carbon atom. Therefore, the name of the compound is sodium $2\text{-}$ methylhexaneoate.

Conclusion

The name of the compound is sodium $2\text{-}$ methylhexaneoate.

Interpretation Introduction

(j)

Interpretation: The IUPAC name for each compound is to be stated.

Concept introduction: International Union of Pure and Applied Chemistry gave guidelines to write the chemical name of molecules. One should follow the given three steps to derive the structure of the compound from its IUPAC name. The first step involves the identification of theparent name and the functional group found at the end of the name. The second step is numbering of carbon skeleton in either direction. The third step is the addition of substituents at appropriate carbon atoms.

Answer to Problem 19.28P

The name of the compound is $7\text{-}$ ethyl $\text{-5-}$ isopropyl $\text{-3-}$ methyldecanoic acid.

Explanation of Solution

The structure of the given compound is shown below.

Figure 10

The above compound contains a chain of ten carbon atoms. The carboxylic acid is a functional group in the compound. The methyl, isopropyl andethyl groupsare attached to third, fifth and seventh carbon atom respectively. Therefore, the name of the compound is $7\text{-}$ ethyl $\text{-5-}$ isopropyl $\text{-3-}$ methyldecanoic acid.

Conclusion

The name of the compound is $7\text{-}$ ethyl $\text{-5-}$ isopropyl $\text{-3-}$ methyldecanoic acid.