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Butan-2-one (CH₃-CO-CH₂-CH₃) is reduced to butan-2-ol (CH₃-CH(OH)-CH₂-CH₃) using a reducing agent like NaBH₄, which selectively reduces ketones to secondary alcohols.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Preparation of Phenols and Ethers - Williamson and Other Methods
Butan-2-ol (CH₃CH(OH)CH₂CH₃), a secondary alcohol, is oxidized to butan-2-one (CH₃COCH₂CH₃) with PCC.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Phenols and Ethers and Uses
Dehydration of butan-2-ol (CH₃CH(OH)CH₂CH₃) with conc. H₂SO₄ proceeds via an E₁ mechanism, forming a carbocation (CH₃CH+CH₂CH₃) as the intermediate.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
Dehydration of butan-2-ol gives a mixture of alkenes, with but-2-ene as the major product according to Saytzeff’s rule.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
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