Linalool is a colorless liquid that is stable and naturally occurs as a minor constituent in roses, rosewood, and lavender. It is an optically active acyclic oxygenated monoterpenoid with a boiling point of 198-199C and molecular formula of C10H18O. It contains two double bonds, as indicated by its reaction with bromine to form tetra bromine. It contains a tertiary alcohol functional group, as shown by its reaction with PCl5. Linalool is isomeric with geraniol and can be synthesized by steam distillation from natural sources.

1. linalool
Prepared by
Dr. N.GOPINATHAN
ASSISTANT PROFESSOR
DEPARTMENT OF PHARMACEUTICAL CHEMISTRY
FACULTY OF PHARMACY
SRI RAMACHANDRA UNIVERSITY
CHENNAI-116
TAMILNADU
INDIA

2. Properties
• 3,7-Dimethylocta-1,6-dien-3-ol
• Colourless Liquid
• Stable
• Origin: Rose, rosewood, Lavender, minor
constituent of others.
• Optially active acyclic oxygenated
monoterpenoid
• Boiling point 198-199C
• Molecular formulae: C10H18O

3. Structure

4. Presence of double bond
• On bromination yield tetra bromine indicates
presence of two double bond.

5. OH group [tertiary alcohol]
• It reacts with PCl5 hence OH is present.
• On catalytic dehydrogenation yield oleffin
reveals that presence of tertiary OH group.

6. Linalool is isomeric with geraniol
steam at 200C

7. Synthesis