Chapter NW1, Problem 2E

(a)

Interpretation Introduction

Interpretation: The structures of $\text{2,2,3,3-tetramethyl-6-propyldodecane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(b)

Interpretation Introduction

Interpretation: The structures of $\text{2-methyl-3-ethyl-4-isobutyldecane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(c)

Interpretation Introduction

Interpretation: The structure of $\text{tert-butylcyclopentane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(d)

Interpretation Introduction

Interpretation: The structure of $\text{4-t-butyl-2,6-dimethylheptane }$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(e)

Interpretation Introduction

Interpretation: The structure of $\text{4-isopropylheptane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(f)

Interpretation Introduction

Interpretation: The structure of $\text{2,3-dimethyl-4-propyloctane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(g)

Interpretation Introduction

Interpretation: The structure of $\text{6-}\left(\text{3-methylbutan-1-yl}\right)\text{-7-}\left(\text{2-methylpentan-2-yl}\right)\text{-4-}\left(\text{propan-2-yl}\right)\text{dodecane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(h)

Interpretation Introduction

Interpretation: The structure of $\text{4,4-dimethyl-5-}\left(\text{2,4-dimethylpentan-3-yl}\right)\text{decane}$ should be drawn.

Concept introduction: As per IUPAC recommendations longest chain found in a continuous manner in a branched molecule is chosen as parent chain. Any substituent that protrudes from certain carbon of parent chain is termed side chain. In hydrocarbon with branches the chief side chains are illustrated below:

  

The numeral present before “yl” indicate the carbon number of side chain that is used to bind as the side chain to parent chain.

(i)

Interpretation Introduction

Interpretation: The structure of $\text{1,3,5-trimethylcyclohexane}$ should be drawn.

Concept introduction: Organic compound that consists of only carbon and hydrogen atoms in them are called hydrocarbons. These can either be saturated or unsaturated. Saturated hydrocarbons are compounds that contain only single bonds between them while hydrocarbons with multiple bonds are called unsaturated hydrocarbons. Alkanes are saturated hydrocarbons with general formula of ${\text{C}}_n{\text{H}}_{2n+2}$ , where $n$ is number of carbon atoms.

(i)

Interpretation Introduction

Interpretation: The structure of $\left(\text{3-propylheptan-2-yl}\right)\text{cyclohexane}$ should be drawn.

Concept introduction: The convention followed for IUPAC nomenclature of cyclic alkanes is as follows:

• If even a single ring is found in a molecule, this ring is regarded as the parent chain.

• Alkyl groups attached to rings are assigned smallest priority and number and it is followed in cyclic manner toward the closest group.

• If two alkyl; group happen to be same the smallest priority number is assigned alphabetically.