Which of the following reactions will yield a primary amine as the major organic product? A. CH ₃ CH ₂ CN Na(Hg) / C ₂ H ₅ OH B. CH ₃ CH ₂ NC LiAlH ₄ C. CH ₃ CH ₂ CN [ (ii) H ₂ O ] (i) SnCl ₂ + HCl D. CH ₃ CH ₂ CN H ₂ / Ni E. CH ₃ CH ₂ CN [ (ii) H ₂ O ] (i) LiAlH ₄ Choose the correct answer from the options given below :

Step-by-step solution

Reaction A: Reduction of an alkyl cyanide with sodium amalgam and ethanol (Mendius reduction) yields a primary amine. CH ₃ CH ₂ CN Na(Hg) / C ₂ H ₅ OH CH ₃ CH ₂ CH ₂ NH ₂ Reaction B: Reduction of an alkyl isocyanide with LiAlH ₄ yields a secondary amine. CH ₃ CH ₂ NC LiAlH ₄ CH ₃ CH ₂ NHCH ₃ Reaction C: Stephen reduction of an alkyl cyanide yields an aldehyde. CH ₃ CH ₂ CN [ (ii) H ₂ O ] (i) SnCl ₂ + HCl CH ₃ CH ₂ CHO Reaction D: Catalytic hydrogenation of an alkyl cyanide yields a primary amine. CH ₃ CH ₂ CN H ₂ /