JEE Main levelSingle correct optionDifficulty 2 of 3ro138
Cyclohexene is treated with cold, dilute, alkaline KMnOX4 (Baeyer test). The main organic product is
Acyclohexene oxide
Bcis-cyclohexane-1,2-diol
Ctrans-cyclohexane-1,2-diol
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.