Wurtz reaction : It involves the reaction of alkyl halides with Na in ether to form higher alkanes. 2R−X+2Na→R−R+2NaX In the given problem,
2C4H9Cl
(A)
+2Na
Ether
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C4H9.C4H9+2NaCl Compound A is t -butyl chloride, in this compound all - CH3 groups have primary hydrogen only and able to give only, one chloro derivative. (CH3)3CC(CH3)3