Question

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-tetramethylhexane
(iv)2,5-dimethyl hexane
(v)2,2,5-trimethylhexane
A. (ii),(iii) and (v)
B. (ii), (iv) and (v)
C. (i),(iv) and (v)
D. (i) , (iii) and (v)

Answer 1

Correct Answer - B
`underset"Neopentyl bromide (A)"(CH_3-undersetunderset(CH_3)|oversetoverset(CH_3)|C-CH_2Br)+underset"Isobutyl bromide (B)"(BrCH_2-oversetoverset(CH_3)|CH-CH_3)underset"(Wurtz reaction)"overset("Na/dry ether,"Delta)to underset"(Dimerization product of A)"underset"2,2,5,5-Tetramethylhexane (ii)"(CH_3-undersetunderset(CH_3)|oversetoverset(CH_3)|(.^2 C)-CH_2-CH_2-undersetunderset(CH_3)|oversetoverset(CH_3)|(.^5C)-CH_3)+underset"(Dimerization product of B)"underset"2,5-Dimethylhexane (iv)"(CH_3-oversetoverset(CH_3)|(.^2CH)-CH_2-CH_2-oversetoverset(CH_3)|(.^5CH)-CH_3)+underset"(Cross product of A and B)"underset"2,2,5-Trimethylhexane (v)"(CH_3-undersetunderset(CH_3)|oversetoverset(CH_3)|(.^2C)-CH_2-CH_2-oversetoverset(CH_3)|(.^5CH)-CH_3)`