What is the main product when 1-bromopropane is treated with alcoholic KOH? (202

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Question: What is the main product when 1-bromopropane is treated with alcoholic KOH? (2021)

Options:

Correct Answer: Propene

Exam Year: 2021

Solution:

Alcoholic KOH promotes elimination reactions, leading to the formation of propene from 1-bromopropane.

What is the main product when 1-bromopropane is treated with alcoholic KOH? (2021)

What is the main product when 1-bromopropane is treated with alcoholic KOH? (2021)

Step 1: Start with 1-bromopropane, which is a molecule that has a bromine atom attached to a three-carbon chain.
Step 2: Add alcoholic KOH (potassium hydroxide in alcohol) to the 1-bromopropane. Alcoholic KOH is known to promote elimination reactions rather than substitution reactions.
Step 3: In the presence of alcoholic KOH, the bromine atom is removed from the 1-bromopropane, and a hydrogen atom from a neighboring carbon is also removed.
Step 4: This removal of bromine and hydrogen leads to the formation of a double bond between the two carbon atoms, resulting in the production of propene, which is an alkene.

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