The products expected to be formed in the Wurtz reaction of a mixture of neopentyl bromide and isobutyl bromide are :
(i) 2,2,4-trimethylpentane
(ii) 2,2,5,5-tetramethylhexane
(iii) 2,2,4,4- tetramethlhexane
(iv) 2,5-dimethylhexane
(v) 2,2,5-trimethylhexane

Options

A. (ii), (iii) and (v)
B. (ii), (iv) and (v)
C. (i), (iv) and (v)
D. (i), (iii) and (v)

Answer

B

Explanation

`underset("Neopentyl bromide (A)")(CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)Br)+underset("Isobutyl bromide (B)")(BrCH_(2)-overset(CH_(3))overset(|)(C)H-CH_(3)) underset(("Wurtz reaction"))overset("Na/dry ether, "Delta)to underset("2,2,5,5-Tetramethylhexane (ii) (Dimerization product of A)")(CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(.^(@)C)-CH_(2)-CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(.^(5)C)-CH_(3))+underset("2,5-Dimethylhexane (v) (Dimerization product of B)")(CH_(3)-overset(CH_(3))overset(.^(2)C)H-CH_(2)-CH_(2)-overset(CH_(3))overset(.^(5)C)H-CH_(3))`
`underset("2,2,5-Trimethylhexane (iv) (Cross product of A and B)")(+CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(.^(2)C)-CH_(2)-CH_(2)-overset(CH_(3))overset(|)(.^(5)C)H-CH_(3))`
thus, option (b) is correct.