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Aromatic Compounds: Overview

Aromatic Compounds: Overview

In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
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Treating arylamines with nitrous acid gives aryldiazonium salts that are effective substrates in nucleophilic aromatic substitution reactions. The diazonio group in these salts can be easily displaced by different nucleophiles, yielding a wide variety of substituted benzenes. The leaving group departs as nitrogen gas, and this easy elimination is the driving force for the substitution reaction.
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Gas Chromatography: Sample Injection Systems

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Related Experiment Video

Updated: Jun 26, 2026

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling

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Published on: December 10, 2019

Controlled release chamber for dispensing aromatic substances.

J E Cilek¹, C F Hallmon

¹John A. Mulrennan, Sr. Public Health Entomology Research and Education Center, College of Engineering Sciences, Technology, and Agriculture, Florida A & M University, 4000 Frankford Avenue, Panama City, FL 32405, USA.

Journal of the American Mosquito Control Association

|February 3, 2009

Summary

A new, inexpensive device made from polyvinyl chloride precisely releases aromatic mosquito attractants. This tool aids in field studies evaluating combined carbon dioxide and hygroscopic substance release for mosquito attraction.

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Area of Science:

Entomology
Chemical Ecology
Device Engineering

Background:

Mosquitoes are significant vectors of disease.
Effective attractants are crucial for mosquito control and research.
Current methods for releasing attractants can be complex or costly.

Purpose of the Study:

To describe a novel, cost-effective device for controlled release of aromatic substances.
To present an easy-to-assemble chamber for field studies.
To evaluate the device's utility in releasing mosquito attractants.

Main Methods:

Construction of a threaded-tubular polyvinyl chloride chamber with a screw-top cap.
Incorporation of ports for introduction and release of gaseous compounds.
Utilizing the device for controlled release of carbon dioxide and aromatic hygroscopic substances.

Main Results:

The device is inexpensive and simple to assemble.
It allows for precise containment and release of gaseous compounds.
Demonstrated utility in field studies for mosquito attractant evaluation.

Conclusions:

The polyvinyl chloride chamber is a practical and economical tool for entomological field studies.
The device facilitates research on mosquito behavior and attractant efficacy.
This innovation supports the development of improved mosquito control strategies.