What are the starting materials to get 2-methylpropene as the major product?

Question

What are the starting materials to get 2-methylpropene as the major product? (A) Sodium methoxide and sec-butyl bromide (B) Sodium ethoxide and sec-butyl bromide (C) Sodium tert-butoxide and ethyl bromide (D) Sodium methoxide and tert-butyl bromide

Tardigrade Admin · Accepted Answer

Alkoxide ions are both powerful nucleophiles and bases. Thus, when they are treated with a tert alkyl halide, they bring its dehydrohalogenation resulting in the formation of alkene. Hence, the alkyl halide taken must be tertiary. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/2938c24607a1cca77887fd3070e41277-.png" />

Q. What are the starting materials to get $2$ -methylpropene as the major product?

Sodium methoxide and sec-butyl bromide

Sodium ethoxide and sec-butyl bromide

Sodium tert-butoxide and ethyl bromide

Sodium methoxide and tert-butyl bromide

Sodium tert-butoxide and methyl bromide

Alkoxide ions are both powerful nucleophiles and bases. Thus, when they are treated with a tert alkyl halide, they bring its dehydrohalogenation resulting in the formation of alkene. Hence, the alkyl halide taken must be tertiary.

Q. What are the starting materials to get 2-methylpropene as the major product?