Preparation Of Amines
Chapter Name : Amines |
Sub Topic Code : 102_12_13_04_06 |
Topic Name : Preparation Of Amines |
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Sub Topic Name : Hoffman Bromamide Degradation Reaction |
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Introduction
Amines are organic compounds and functional groups that contain a basic nitrogen atom with a lone pair.
Pre-Requisites:
Amines
Activity:
Blue dye.
Real Life Question:
What are amines?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Amines | Amines are organic compounds and functional groups that contain a basic nitrogen atom with a lone pair. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Aniline | Aniline, phenylamine or aminobenzene is an organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is the prototypical aromatic amine. |
Real life uses :
Preparation of methylene dianiline.
Places to visit :
Departmental stores.
Practical examples around us
| Examples | Explainations |
|---|---|
| Indigo | Indigo was a natural dye extracted from plants, and this process was important economically because blue dyes were once rare. |
What you learn in Theory:
The Hofmann rearrangement is the organic reaction of a primary amide to a primary amine with one fewer carbon atom.
What you learn in Practice:
The reaction of bromine with sodium hydroxide forms sodium hypobromite in situ, which transforms the primary amide into an intermediate isocyanate. The intermediate isocyanate is hydrolyzed to a primary amine, giving off carbon dioxide.