Question
Consider the following organic reaction sequence. Choose the final product (X) from the following (consider the major product in all intermediate reactions)
JEE Main
Chemistry
Amines
2026
JEE Main 2026 (06 April Shift 2)
JEE Main Chemistry Question (2026) — Solution
Options
- A. Benzene
- B. Phenol
- C. Propanol
- D. Chlorobenzene
Answer
A. Benzene
Step-by-step solution
The starting material is propanoic acid (CH_3CH_2COOH). In step (i), propanoic acid reacts with NH_3 upon heating to form propanamide. CH_3CH_2COOH NH_3, CH_3CH_2CONH_2 In step (ii), propanamide undergoes Hoffmann bromamide degradation with NaOH and Br_2 to form ethylamine. CH_3CH_2CONH_2 NaOH, Br_2 CH_3CH_2NH_2 In step (iii), ethylamine reacts with nitrous acid (HNO_2) to form an unstable diazonium salt, which hydrolyzes to give ethanol. CH_3CH_2NH_2 HNO_2, H_2O CH_3CH_2OH In step (iv), ethanol reacts with benzenediazonium chloride (C_6H_5N_2Cl). Ethanol reduces the diazonium salt to benzene, while getting oxidized to ethanal. CH_3CH_2OH + C_6H_5N_2Cl C_6H_6 + CH_3CHO + N_2 + HCl The final major product (X) is benzene. Answer: Benzene
Related: Chemistry — Amines · All PYQ Banks