Compounds of Carbon Containing Nitrogen
Telangana Open School (TOSS) · Class 12 · Chemistry
Complete topic list for Compounds of Carbon Containing Nitrogen in Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Compounds of Carbon Containing Nitrogen
Amines: Classification and Nomenclature
- Amines are classified as primary (1°), secondary (2°), or tertiary (3°) based on the number of alkyl/aryl groups attached to nitrogen.
- Primary amines have one R group, secondary have two, and tertiary have three.
- Quaternary ammonium salts have four R groups and a positive charge on nitrogen.
Preparation of Amines
- Primary amines can be prepared from alkyl halides using excess ammonia to prevent further alkylation.
- Reduction of nitriles (R-CN) gives primary amines with one extra carbon.
- Reduction of amides with LiAlH₄ gives primary amines with same number of carbons.
Chemical Properties and Basicity of Amines
- Amines are basic due to lone pair on nitrogen.
- Aliphatic amines are stronger bases than ammonia due to electron-donating alkyl groups.
- Aromatic amines like aniline are weaker bases than ammonia due to resonance.
Reactions of Amines
- Primary amines react with nitrous acid (HNO₂) to form diazonium salts (aromatic) or alcohols (aliphatic).
- Diazotization occurs at low temperature (273–278 K).
- Aniline undergoes electrophilic substitution easily due to activation by -NH₂ group.
Key Concepts
Central concept: Nitrogen-Containing Organic Compounds
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