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Dehydrohalogenation of 2-bromo-2-methylbutane with a sterically bulky base like potassium tert-butoxReaction Mechanism Chemistry Question

Question

Dehydrohalogenation of 2-bromo-2-methylbutane with a sterically bulky base like potassium tert-butoxide ($t-BuO^-$) predominantly yields:

Answer: B

💡 Solution & Explanation

A bulky base cannot easily access hindered internal protons. It abstracts the exposed terminal protons, yielding the kinetically controlled, less substituted Hofmann alkene.

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