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JEE Main levelOne or more correct optionsDifficulty 2 of 3hc246

The dihalide shown is heated with sodium in dry ether. Which statements are correct?

  1. AThe product is cyclobutane.
  2. BThe product has no carbon-carbon double bond.
  3. CTwo moles of sodium are consumed per mole of dihalide.
  4. DButane is the major product.

Answer: A, B, C

The compound shown is 1,4-dibromobutane. Both C-Br carbons are coupled by two sodium atoms in an intramolecular Wurtz reaction, closing a four-membered ring: cyclobutane, which is saturated. Butane would be a reduction product and is not the main product.
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