JEE Main20266 April 2026Evening ShiftChemistryAminesActual
Consider the following organic reaction sequence. Choose the final product (X) from the following (consider the major product in all intermediate reactions)
Options
- ABenzene
- BPhenol
- CPropanol
- DChlorobenzene
Correct answer
A. Benzene
Step-by-step solution
The starting material is propanoic acid ( CH₃CH₂COOH ). In step (i), propanoic acid reacts with NH₃ upon heating to form propanamide. CH₃CH₂COOH NH₃, CH₃CH₂CONH₂ In step (ii), propanamide undergoes Hoffmann bromamide degradation with NaOH and Br₂ to form ethylamine. CH₃CH₂CONH₂ NaOH, Br₂ CH₃CH₂NH₂ In step (iii), ethylamine reacts with nitrous acid ( HNO₂ ) to form an unstable diazonium salt, which hydrolyzes to give ethanol. CH₃CH₂NH₂ HNO₂, H₂O CH₃CH₂OH In step (iv), ethanol reacts with benzenediazonium chloride (