1-Bromo-3-chlorocyclobutane is treated with two equivalents of Na, in the presence of either. Which of the following will be formed?

1-Bromo-3-chlorocyclobutane is treated with two equivalents of Na, in

1.	1-Bromo-3-chlorocyclobutane is treated with two equivalents of Na, in the presence of either. Which of the following will be formed?
Answer» Solution :Since alkyl bromides are more reactive than alkyl chlorides, therefore, INTRAMOLECULAR Wurtz reaction OCCURS on the SIDE of Br atom.