Aromatic Hydrocarbon
Chapter Name : Hydrocarbons |
Sub Topic Code : 102_11_13_05_12 |
Topic Name : Aromatic Hydrocarbon |
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Sub Topic Name : Mechanism Of Electrophilic Substitution Reaction |
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Introduction
An aromatic hydrocarbon or arene (or sometimes aryl hydrocarbon) is a hydrocarbon with alternating double and single bonds between carbon atoms forming rings.
Pre-Requisites:
Aromatic Hydrocarbon
Activity:
Vinegar.
Real Life Question:
What are aromatic hydrocarbons?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Aromatic hydrocarbon | Aromatic hydrocarbons are compound having a closed ring of alternate single and double bonds with delocalized electrons. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Gasoline | Gasoline is transparent, petroleum-derived oil that is used primarily as a fuel in internal combustion engines. |
Real life uses :
Flavor.
Places to visit :
Pharmacy.
Practical examples around us
| Examples | Explainations |
|---|---|
| Pyridine | Pyridine is a basic heterocyclic organic compound with the chemical formula C5 H5 N. It is structurally related to benzene, with one methine group (=CH-) replaced by a nitrogen atom. |
What you learn in Theory:
Electrophilic aromatic substitution is an organic reaction in which an atom that is attached to an aromatic system (usually hydrogen) is replaced by an electrophile.
What you learn in Practice:
Electrophilic attack on the benzene ring by an electrophile leads to the formation of a carbonium ion. The positive charge of this carbonium ion is distributed over the whole molecule particularly on the 1 and 3 positive relative to the carbon atom bearing the electrophile.