9 public questions tagged with this topic.
Propan-1-ol (CH₃CH₂CH₂OH), a primary alcohol, is oxidized to propanal (CH₃CH₂CHO) with PCC, which stops at the aldehyde stage.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
PCC oxidizes secondary alcohols to ketones without further oxidation, unlike strong oxidants like KMnO₄.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
Acetophenone (C₆H₅COCH₃) is reduced to 1-phenylethanol (C₆H₅CH(OH)CH₃) using NaBH₄, a selective reducing agent for ketones.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Alcohols - from Alkenes Haloalkanes Carbonyls Grignard
Acid-catalyzed hydration follows Markovnikov’s rule, giving propan-2-ol. Hydroboration-oxidation gives propan-1-ol (anti-Markovnikov).
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Alcohols - from Alkenes Haloalkanes Carbonyls Grignard
Propan-2-ol (CH₃CH(OH)CH₃) is dehydrated to propene (CH₃CH=CH₂) using concentrated H₂SO₄ at 170°C, following an E₁ mechanism.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Physical Properties and Acidity of Alcohols and Phenols
Cyclohexanol, a secondary alcohol, is oxidized to cyclohexanone with PCC, which selectively oxidizes secondary alcohols to ketones.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Physical Properties and Acidity of Alcohols and Phenols
Ethanol (CH₃CH₂OH), a primary alcohol, is oxidized to acetaldehyde (CH₃CHO) with PCC, which selectively oxidizes to the aldehyde stage.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
NaBr with H₂SO₄ reacts with 1-propanol ( CH₃CH₂CH₂OH ) to form 1-bromopropane ( CH₃CH₂CH₂Br ).
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Polyhalogen Compounds - Chloroform Iodoform DDT Freons
PBr₃ converts 1-pentanol to 1-bromopentane ( CH₃CH₂CH₂CH₂CH₂Br ) with H₃PO₃ as a byproduct.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Classification and Nomenclature and Isomerism of Haloalkanes
