Chapter 20.1, Problem 20.1P

Interpretation Introduction

Interpretation: Among the given terpenes, the one that contain conjugated double bonds has to be found.

Concept Introduction:

Dienes:

Dienes are organic compounds that contain two double bonds. In the name “di”-means “two” and “ene”- means from the word alkene which is a double bond characteristic functional group.

Types of Dienes:

Conjugated Dienes are those compounds in which the two double bonds are separated by a single bond.

Unconjugated Dienes are those compounds in which the two double bonds are separated by two or more single bonds.

Cumulated Dienes are those compounds in which the two double bonds are shared by a $sp$- hybridised carbon atom.