AP Inter 2nd Year Chemistry Notes Chapter 13 Organic Compounds Containing Nitrogen

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AP Inter 2nd Year Chemistry Notes 13th Lesson Organic Compounds Containing Nitrogen

→ Amines are the derivatives of ammonia and are obtained by replacement of one, two or all the three hydrogen atoms by alkyl groups.

→ If one hydrogen atom of ammonia replaced by alkyl (or) Aryl group 1° – amines are obtained. If two hydrogen atoms of ammonia replaced 2° – amines are obtained. If three hydrogen atoms of ammonia replaced 3° – amines are obtained.

→ Amines are prepared by the reduction of nitro compounds, ammonolysis of alkyl halides, Reduction of amides, Gabriel phthalimide synthesis Hoffmann bromasmide reaction etc.

→ Alkyl amines are stronger bases than ammonia due to +Inductive effect of alkyl groups.

AP Inter 2nd Year Chemistry Notes Chapter 13 Organic Compounds Containing Nitrogen

→ Aliphatic (or) Aromatic 1° – amines heating with chloroform and alcoholic kOH to form isocyanides which are foul smelling substance (carbylamie reaction).

→ Aromatic amines react with nitrous acid at 0-5°C temperature to form diazonium salts. This reaction is called Diazotisation.

→ Benzene sulphonyl chloride is known as Hinsberg reagent. Which is used to distinguish 1°, 2°, 3°- amines.

→ Formation of halobenzenes, cyanobenzenes from aromatic diazonium salts in presence of Cu(I)ion is called Sandmeyer reaction.

→ Formation of halobenzenes from reaction of diazonium salt solution with halogen acid in presence of copper powder is called Gatterman reactions.

→ Benzene diazonium chloride reacts with phenol to from P-hydroxy azobenzene. This types of reactions are called coupling reactions.