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(a) Explain carbylamine reaction by taki...

(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.

Text Solution

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(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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