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In the Hofmann bromamide degradation, how many moles of NaOH and Br2 are required for each mole of amine formed?

1. 2 moles of NaOH and 2 moles of Br2
2. 4 moles of NaOH and 1 mole of Br2
3. 1 mole of NaOH and 1 mole of Br2
4. 4 moles of NaOH and 2 moles of Br2

Correct answer: 4 moles of NaOH and 1 mole of Br2

Solution

Hofmann bromamide degradation: RCONH2 + Br2 + 4NaOH -> RNH2 + Na2CO3 + 2NaBr + 2H2O. So each mole of amine requires 4 moles of NaOH and 1 mole of Br2.

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