Question

Elimination of bromine from 2 - bromobutane results in the formation of
(a) equimolar mixture of 1 and 2 - butene
(b) predominantly 2 - butene
(c) predominantly 1 - butene
(d) predominantly 2 - butyne

Answer 1

In elimination reaction of alkyl halide major product is obtained according to Saytzeff’s rule, which states that when two alkenes may be formed, the alkene which is most substituted one predominates.