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JEE Main levelSingle correct optionDifficulty 2 of 3o2228

The alkene shown is heated with dilute in water. Which structure is the major product?

  1. AStructure A
  2. BStructure B
  3. CStructure C
  4. DStructure D

Answer: D

The alkene is methylenecyclopentane. Protonation of the exocyclic gives the tertiary 1-methylcyclopentyl cation, which is captured by water. The product is 1-methylcyclopentan-1-ol.
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