NEET2026ChemistryHydrocarbonsActual
Consider the following reaction, and choose the correct option.
Options
- ACompound P is obtained by the hydrogenation of benzoyl chloride with Pd on BaS O₄ .
- BOn treating compound P with saturated NaHC O₃ solution, brisk effervescence is observed.
- CCompound P can be prepared by treating benzene with anhydrous AlCl₃ and CH₃ COCl.
- DOn treatment with bromine water, compound P gives a white precipitate.
Correct answer
A. Compound P is obtained by the hydrogenation of benzoyl chloride with Pd on BaS O₄ .
Step-by-step solution
The given reaction is the Etard reaction. Toluene reacts with chromyl chloride ( CrO ₂ Cl ₂ ) in a non-polar solvent like CS ₂ to form a chromium complex, which upon acid hydrolysis ( H ₃ O ^+ ) yields benzaldehyde. Therefore, compound P is benzaldehyde ( C ₆ H ₅ CHO ). Let us evaluate the given options: Option (1): The hydrogenation of benzoyl chloride ( C ₆ H ₅ COCl ) with H ₂ in the presence of Pd supported on BaSO ₄ is known as the Rosenmund reduction. This reaction yields benzaldehyde. Thus, this statement is