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CBSE Class 12 · 2023 · Compounds Containing NitrogenShort Answer

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(b)(i) Complete the reaction shown in the figure with the main product formed.
(ii) Convert bromoethane to propanamine.
Structure (b)(i): reaction to complete
(b)(i): reaction to complete

Answer: (i) Product per the printed reagent. (ii) C₂H₅Br + KCN → C₂H₅CN → LiAlH₄ (or H₂/Ni) → CH₃CH₂CH₂NH₂.

Solution

(i) Apply the printed reagent to the displayed substrate and write its standard product (reduction → the amine; HNO → the alcohol/diazonium; acylation → the amide, as shown).
(ii) Nitrile homologation:

CBSE Class 12 Board · 2023 · Subjective

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