What is the expected final product from the following curtius rearrangement?

C H_{3} C H_{2} C H_{2} N H_{2}

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C H_{3} C H_{2} C H_{2} C H_{2} N H_{2}

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C H_{3} C H_{2} C H_{2} O H

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C H_{3} C H_{2} C H_{2} C O N H_{2}

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Solution

The correct option is A $C H_{3} C H_{2} C H_{2} N H_{2}$
In Curtius rearrangement, acyl halides will react with sodium azide to give primary amines.

Mechanism of Curtius rearrangement:
1. Azide ion will attack the acyl carbon and replace the $C l$ atom.
2. On heating the azide compound, $N_{2}$ gets eliminated and the alkyl group gets migrated to form a isocyanate intermediate.
3. Isocyanate on hydrolysis gives primary amine and $C O_{2}$ .

Hence, option (a) is correct.

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