1.

(a) Explain carbylamine reaction by taking methyl amine as an example. (b) Why do primary amine have higher boiling point than tertiary amines? (c) Give an example for a coupling reaction of diazonium salt and give its chemical equation.

Answer»

Solution :(a) When a primary amine is heated with CHLOROFORM and alcoholic KOH gives ISOCYANIDES. ,
`R-NH_(2) +CHCI_(3) +3KOHoverset(“heat”) to R- NC+3KCI+ 3H_(2) O`
Eg. `R=CH_(3)`
` CH_(3) - NH_(2) +CHCI_(3) +3KOH overset(”heat”)to CH_(3) - NC +3KCI+3H_(2)O`
(b) Due to hydrogen bonding (OR) INTERMOLECULAR assciation
Benzene diazonium chloride (BDC)reacts wit5hy phenol to give azo dye.


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