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JEE Main levelSingle correct optionDifficulty 2 of 3ro138

Cyclohexene is treated with cold, dilute, alkaline (Baeyer test). The main organic product is

  1. Acyclohexene oxide
  2. Bcis-cyclohexane-1,2-diol
  3. Ctrans-cyclohexane-1,2-diol
  4. Dhexanedioic acid

Answer: B

Cold dilute alkaline permanganate adds two OH groups to the same face through a cyclic manganate ester (syn addition). Cyclohexene therefore gives cis-cyclohexane-1,2-diol. The diol is not cleaved under these cold dilute conditions.
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