Question

Predict the major and minor products of the E2 dehydrohalogenation of each of the following.

Answer 1

Dehydrohalogenation reaction is the reaction in which a haloalkane changes undergo elimination reaction and thus it changes to alkene.

$CH_3CH_2Br + alc.KOH \longrightarrow CH_2=CH_2 + KBr$

For 2 degree or 3 degree haloalkane reaction takes place as per Saytzeff rule