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Describe the following giving the relevant chemical equation in each case : (i) Carbylamine reaction (ii) Hoffmann' s bromamide reaction. |
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Answer» Solution :(i) Carbylamine reaction : Primary amines on warming with chloroform and alcoholic KOH gives unpleasent ODOUR of isocyanides or carbylamine. `RNH_(2)+CHCI_(3)+3KOH rarr RNC+3KCI +3H_(2)O` HOFFMANN bromamide reaction : When primary AMIDE is TREATED with KOH solution and bromine, it gives primary amine which has one carbon atom less than the original amide. `underset("Amide")(CH_(3)CONH_(2))+Br_(2)+4KOHrarrunderset(+2KBr+2H_(2)O)underset("Primary amine")(CH_(3)NH_(2))+K_(2)CO_(3)` |
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