The major product formed when 1-Bromo-3-chlor | vedclass

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(C) The reaction of $1$-Bromo-$3$-chlorocyclobutane with metallic sodium in dry ether is an intramolecular Wurtz reaction. Since both halogen atoms ar

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Bicyclobutane

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(C) The reaction of $1$-Bromo-$3$-chlorocyclobutane with metallic sodium in dry ether is an intramolecular Wurtz reaction. Since both halogen atoms are present on the same ring at positions $1$ and $3$,the sodium metal facilitates the removal of both halogen atoms as $NaBr$ and $NaCl$ (or $NaBr$ and $NaCl$ depending on the specific halogen reactivity,here $Br$ is more reactive),leading to the formation of a new carbon-carbon bond between the $1$ and $3$ positions. This results in the formation of bicyclo[$1.1.0$]butane.

The major product formed when $1$-Bromo-$3$-chlorocyclobutane reacts with metallic sodium in dry ether is

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