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Rosenmund reduction (H₂,Pd/BaSO₄) reduces acyl chlorides to aldehydes. Benzoyl chloride (C₆H₅COCl) yields benzaldehyde (C₆H₅CHO).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Reactions due to α-Hydrogen - Aldol, Cannizzaro and Acidity of Carboxylic Acids
Benzaldehyde (C₆H₅CHO) lacks α-hydrogens, so it undergoes Cannizzaro reaction, forming benzyl alcohol (C₆H₅CH₂OH) and benzoate.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Physical Properties and Nucleophilic Addition Reactions
Hydroxylamine (NH₂OH) reacts with the carbonyl group of benzaldehyde (C₆H₅CHO) to form benzaldoxime (C₆H₅CH\=NOH).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
The iodoform test is positive for compounds with a CH₃C\=O group, like acetophenone (C₆H₅COCH₃), but not for benzaldehyde (C₆H₅CHO).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones
Benzyl alcohol (C₆H₅CH₂OH), a primary alcohol, is oxidized to benzaldehyde (C₆H₅CHO) with PCC, which stops at the aldehyde stage.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Physical Properties and Acidity of Alcohols and Phenols
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