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Explain the Hoffmann's bromamide reactio...

Explain the Hoffmann's bromamide reaction.

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Hoffmann.s Bromamide reaction : When an acid amide is heated with bromine and potassium hydroxide solution a primary amine is obtained.
`R-CONH_2+Br_2+4KOHoverset(/_\)toR-NH_2+K_2CO_3+2KBr+2H_2O`
and `R=CH_3`
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