10.10     Predict all the alkenes that would be formed by dehydrohalogenation of the following halides with sodium ethoxide in ethanol and identify the  major alkene: 

          (iii)     2,2,3-Trimethyl-3-bromopentane

Answers (1)
D Devendra Khairwa



 In this compound we have two type of \beta - hydrogen thus dehalogenation we get two types of products namely 3, 4, 4-Trimethylpent-2-ene and 2-Ethyl-3,3-dimethylbut-2-ene.


Here 3, 4, 4-Trimethylpent-2-ene will be major product, since the \alpha - hydrogen attached to the double bond are greater.