Chapter 12, Problem 12.21E

Interpretation Introduction

(a)

Interpretation:

The structural formula of $cis\text{-4-methyl-2-pentene}$ is to be drawn.

Concept introduction:

The systematic naming of organic compound is given by IUPAC nomenclature. The naming of organic compound is done such that the structure of the organic compound is correctly interpreted from the name.

Rules for writing IUPAC name from the structural formula are shown below.

• First, identify the longest carbon chain.

• The next step is to identify the groups attached to the longest chain.

• Identify the position, location, and a number of the substituents bonded to the carbon chain.

• Use prefix di, tri, tetra if the same type of substituents is present.

• Name the substituents in alphabetical order.

Interpretation Introduction

(b)

Interpretation:

The structural formula of $trans\text{-5-methyl-2-heptene}$ is to be drawn.

Concept introduction:

The systematic naming of organic compound is given by IUPAC nomenclature. The naming of organic compound is done such that the structure of the organic compound is correctly interpreted from the name.

Rules for writing IUPAC name from the structural formula are shown below.

• First, identify the longest carbon chain.

• The next step is to identify the groups attached to the longest chain.

• Identify the position, location, and a number of the substituents bonded to the carbon chain.

• Use prefix di, tri, tetra if the same type of substituents is present.

• Name the substituents in alphabetical order.