Amines nitrogen wali organic chemistry hai — basicity order, diazonium salts aur coupling reactions core topics hain. Yahan aapko is chapter ke sabse important formulas aur quick revision points free milte hain — NCERT/CBSE syllabus ke hisaab se, boards aur JEE/NEET dono ke liye.
Important Formulas & Concepts — Amines
- Gabriel phthalimide: sirf 1° aliphatic amine
- Hoffmann bromamide: RCONH₂ + Br₂/NaOH → RNH₂ (ek C kam)
- Basicity (aqueous): 2° > 1° > 3° (alkyl); aromatic << aliphatic
- Diazotisation: ArNH₂ + NaNO₂/HCl (0-5°C) → ArN₂⁺Cl⁻
- Sandmeyer: ArN₂⁺ + CuCl/CuBr/CuCN → ArCl/ArBr/ArCN
- Coupling: ArN₂⁺ + phenol/aniline → azo dye (orange/yellow)
- Carbylamine test: 1° amine + CHCl₃/KOH → isocyanide (foul smell)
- Hinsberg test: benzenesulphonyl chloride se 1°/2°/3° distinguish
Quick Revision Points
- Aniline ki basicity kam (lone pair ring mein delocalised)
- Diazonium salt 0-5°C par hi stable
- Aniline direct nitration nahi karte (oxidation) — acetylation pehle
- Gabriel se aromatic amine nahi banta
- Azo dyes ka commercial importance
📘 Complete Visual Notes + Formula Sheet PDF
Ye sirf ek quick preview hai. Pura chapter — colour-coded mind-maps, saare derivations, solved formula sheet — instant PDF download.
FAQ
Basicity order kaise samjhu?
+I effect vs steric vs solvation — PDF mein teeno factors ka combined chart hai.
Diazonium ki reactions kitni important?
Bahut — conversions ke question isi se bante hain. PDF mein diazonium reaction wheel hai.
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