Related Experiment Video
Updated: Apr 30, 2026

Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
A nine carbon homologating system for skip-conjugated polyenes
Hussein H Mustafa1, Mark S Baird1, Juma'a R Al Dulayymi1
1School of Chemistry, Bangor University, Bangor, Gwynedd LL57 2UW, United Kingdom.
Ozonolysis of a cyclic triene yields a difunctionalized nonadiene. This intermediate is a versatile precursor for synthesizing various polyunsaturated pheromones and fatty acids.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Cyclic organic compounds offer unique structural scaffolds.
- Ozonolysis is a powerful oxidative cleavage reaction for alkenes.
Purpose of the Study:
- To explore the ozonolysis of Z,Z,Z-cyclonona-1,4,7-triene.
- To investigate the synthetic utility of the resulting difunctionalized nonadiene.
Main Methods:
- Ozonolysis of Z,Z,Z-cyclonona-1,4,7-triene.
- Chemical conversion of the ozolysis product.
Main Results:
- Successful ozonolysis yielded 1,9-difunctionalised Z,Z-3,6-nonadiene.
- The nonadiene intermediate was efficiently transformed into diverse polyunsaturated compounds.
Conclusions:
- Z,Z,Z-cyclonona-1,4,7-triene ozonolysis provides a key intermediate.
- This route is effective for accessing complex pheromones and fatty acids.
Related Concept Videos
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Structure of Conjugated Dienes
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the...
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
¹H NMR: Pople Notation
A proton...
UV–Vis Spectroscopy: Woodward–Fieser Rules

