Chapter 5, Problem 21P

What is each compound’s systematic name?

Interpretation Introduction

Interpretation:

The systematic name should be given for the compound.

Concept introduction:

Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry).IUPAC name consists of three parts, namely Prefix, suffix and root word.

Prefix- Represents the substituent present in the molecule and its position in the root name.

Suffix- Denotes the presence of functional group if any in the molecule.  It can be an alkene, alkyne, alcohol, carboxylic acid, alcohol etc.  To add suffix to name a compound, the suffix “-ane” in the parent alkane is replaced by the respective suffix, which corresponds to the functional group present in the given compound.  For carboxylic acid, suffix “-oic” will be added, for alcohol, suffix “-ol” will be added and so on

Root word - Represents the longest continuous carbon skeleton of the organic molecule.

Alkenes:

Alkenes are a class of hydrocarbons. The carbon-carbon double bond is called as alkenes and it is also called as olefins.

Explanation of Solution

The name of the compound is given below,

The number of carbon in parent chain is five, hence it is called as pentane, it is in cycle form therefore cyclopentane. The functional group of the given molecule is alkene therefore the suffix “-ane” is replaced with “-ene” indicating the presence of double bond. In the given structure the first and fifth carbon is bonded with methyl group, double bond in first carbon. Therefore the name of the compound is 1, 5- Dimethyl cyclopent-1-ene.

Interpretation Introduction

Interpretation:

The systematic name should be given for the compound.

Concept introduction:

Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry).IUPAC name consists of three parts, namely Prefix, suffix and root word.

Prefix- Represents the substituent present in the molecule and its position in the root name.

Suffix- Denotes the presence of functional group if any in the molecule.  It can be an alkene, alkyne, alcohol, carboxylic acid, alcohol etc.  To add suffix to name a compound, the suffix “-ane” in the parent alkane is replaced by the respective suffix, which corresponds to the functional group present in the given compound.  For carboxylic acid, suffix “-oic” will be added, for alcohol, suffix “-ol” will be added and so on

Root word - Represents the longest continuous carbon skeleton of the organic molecule.

Alkenes:

Alkenes are a class of hydrocarbons. The carbon-carbon double bond is called as alkenes and it is also called as olefins.

Explanation of Solution

The name of the compound is given below,

The number of carbon in parent chain is six, hence it is called as hexane, it is in cycle form therefore cyclohexane. The functional group of the given molecule is alkene therefore the suffix “-ane” is replaced with “-ene” indicating the presence of double bond. In the given structure the fourth carbon is bonded with methyl group, double bond in first carbon. Therefore the name of the compound is 4-Methyl cyclohex-1-ene.

Interpretation Introduction

Interpretation:

The systematic name should be given for the compound.

Concept Introduction:

Any organic molecule can be named by using certain rules given by IUPAC (International Union for Pure and applied chemistry).IUPAC name consists of three parts, namely Prefix, suffix and root word.

Prefix- Represents the substituent present in the molecule and its position in the root name.

Suffix- Denotes the presence of functional group if any in the molecule.  It can be an alkene, alkyne, alcohol, carboxylic acid, alcohol etc.  To add suffix to name a compound, the suffix “-ane” in the parent alkane is replaced by the respective suffix, which corresponds to the functional group present in the given compound.  For carboxylic acid, suffix “-oic” will be added, for alcohol, suffix “-ol” will be added and so on

Root word - Represents the longest continuous carbon skeleton of the organic molecule.

Alkenes:

Alkenes are a class of hydrocarbons. The carbon-carbon double bond is called as alkenes and it is also called as olefins.

Explanation of Solution

The name of the compound is given below,

The number of carbon in parent chain is six, hence it is called as hexane, it is in cycle form therefore cyclohexane. The functional group of the given molecule is alkene therefore the suffix “-ane” is replaced with “-ene” indicating the presence of double bond. In the given structure the fourth carbon is bonded with methyl group, fifth carbon is bonded with ethyl group, double bond in first carbon. Therefore the name of the compound is 5-ethyl-4-Methyl cyclohex-1-ene.