Haloalkanes and Haloarenes - Result Question 27
####27. 2-Bromopentane is heated with potassium ethoxide in ethanol. The major product obtained is
[1998]
(a) 2-ethoxypentane
(b) pentene-1
(c) trans-2-pentene
(d) cis-pentene-2
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Solution:
- (c) Potassium ethoxide is a strong base, and 2bromopentane is a $2^{\circ}$ bromide, so elimination reaction predominates
Since, trans- alkene is more stable than cis, thus trans-pentene - 2 is the main product.
