ALDEHYDES AND KETONES

Consider the following sequence of reactions CH₃CH₂CHO → (KCN / H₂SO₄) → A → (1. LiAlH₄ 2. H₂O) → B

Correct answer:(3)  Cyanohydrin becomes amino alcohol When carbonyl compounds react with HCN to form corresponding cyanohydrins. When these cyanohydrines are reducing with strong reducing agents like Lithium aluminium hydride to form amino alcohols.  ALDEHYDES react with HCN It is a Nucleophilic addition reaction When propionaldehyde react with HCN to form propionaldehyde cyanohydrin, Which wind followed […]

Aldehydes and ketones give addition reactions with 1) HCN 2) NaHSO3 3) CH3MgX 4) All of these

Correct answer : (4)                  Generally carbonyl compounds are reacting with HCN form Cyanohydrin. These reactions are nucleophilic addition reactions. For instance, Aldehydes react with HCN to form aldehyde Cyanohydrin. In the same way key don’ts also react with HCN to form ketone cyanohydrins.   For example, Acetaldehyde […]

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