Which of the following alkenes, on oxidation by KMnO ₄ in dil. H ₂ SO ₄ forms adipic acid?

Step-by-step solution

Oxidative cleavage of alkenes with acidic KMnO ₄ cleaves the carbon–carbon double bond, with each unsaturated carbon oxidized to a carboxylic acid group. Adipic acid has structure HOOC 8211 ( CH ₂)₄ 8211 COOH , a six-carbon dicarboxylic acid. Terminal alkene Hex-1-ene ( CH ₂= CH 8211 CH ₂ 8211 CH ₂ 8211 CH ₂ 8211 CH ₃ ) oxidizes to CO ₂ and pentanoic acid. Internal alkene Hex-2-ene ( CH ₃ 8211 CH = CH 8211 CH ₂ 8211 CH ₂ 8211 CH ₃ ) cleaves to acetic acid and butanoic acid. Symmetric alkene Hex-3-ene ( CH ₃ 8211 CH