Chemistry · PYQ NEET UG 2023

Which of the following reactions will NOT give primary amine as the product? (1) \( \mathrm{CH}_{3} \mathrm{CONH}_{2} \xrightarrow{\mathrm{Br}_{2} / \mathrm{KOH}} \text{ Product} \) (2) \( \mathrm{CH}_{3} \mathrm{CN} \xrightarrow[\text{ (ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}]{\text{ (i) } \mathrm{LiAlH}_{4}} \text{ Product} \) (3) \( \mathrm{CH}_{3} \mathrm{NC} \xrightarrow[\text{ (ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}]{\text{ (i) } \mathrm{LiAlH}_{4}} \text{ Product} \) (4) \( \mathrm{CH}_{3} \mathrm{CONH}_{2} \xrightarrow[\text{ (ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}]{\text{ (i) } \mathrm{LiAlH}_{4}} \text{ Product} \)

1. A
   \( \mathrm{CH}_{3} \mathrm{NC} \xrightarrow[\text{ (ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}]{\text{ (i) } \mathrm{LiAlH}_{4}} \text{ Product} \)
2. B
   \( \mathrm{CH}_{3} \mathrm{CN} \xrightarrow[\text{ (ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}]{\text{ (i) } \mathrm{LiAlH}_{4}} \text{ Product} \)
3. C
   \( \mathrm{CH}_{3} \mathrm{CONH}_{2} \xrightarrow{\mathrm{Br}_{2} / \mathrm{KOH}} \text{ Product} \)
4. D
   \( \mathrm{CH}_{3} \mathrm{CONH}_{2} \xrightarrow[\text{ (ii) } \mathrm{H}_{3} \mathrm{O}^{\oplus}]{\text{ (i) } \mathrm{LiAlH}_{4}} \text{ Product} \)