CBSE Class 12 · 2009 · Delhi · Compounds Containing NitrogenShort Answer

Giving an example of each, describe the following reactions:
i) Hofmann's bromamide reaction
ii) Gattermann reaction
iii) a coupling reaction

Solution

(i)

C H_{3} CON H_{2} + B r_{2} + 4KOH \to C H_{3} N H_{2} + K_{2} C O_{3} + 2KBr + 2 H_{2} O

(ii) Gattermann — copper powder with the halogen acid replaces –N

_{2}^{+}

C_{6} H_{5} N_{2}^{+} C l^{-} Cu/HCl C_{6} H_{5} Cl + N_{2}

(iii)

C_{6} H_{5} N_{2}^{+} C l^{-} + C_{6} H_{5} OH O H^{-} p - HO C_{6} H_{4} N = N C_{6} H_{5}

CBSE Class 12 Board · 2009 · Delhi · Subjective