Chapter 11.2, Problem 11.2PP

(a)

Interpretation Introduction

Interpretation:

Given cycloalkene has to be named using IUPAC nomenclature.

Concept Introduction:

A common nomenclature of naming organic compounds has been developed by IUPAC.  By usage of this nomenclature or rules, memorizing of names of organic compounds is not necessary.

IUPAC rules for naming cycloalkenes:

• The number of carbon atoms present in the ring is counted and the name of the alkane that has the same number of carbon atoms is given by adding prefix “cyclo-” to the alkane name.  Suffix “-ane” is changed as “-ene”.
• The double bond that is present in the ring is given always the number 1.
• If the ring is substituted, then the names of the group or atoms have to be placed before the name of cycloalkene.
• If the ring contains more than one substituent, then the numbers has to be used in a way that it gives the lowest position for the substituents following position 1 for the double bond.

(b)

Interpretation Introduction

Interpretation:

Given cycloalkene has to be named using IUPAC nomenclature.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

Given cycloalkene has to be named using IUPAC nomenclature.

Concept Introduction:

Refer part (a).

(d)

Interpretation Introduction

Interpretation:

Given cycloalkene has to be named using IUPAC nomenclature.

Concept Introduction:

Refer part (a).