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Multiple Choice
Which of the following reagents is required for the Diels-Alder reaction?
A
An alkene and a halogen
B
A Grignard reagent and a carbonyl compound
C
An alcohol and an acid chloride
D
A diene and a dienophile
Verified step by step guidance
1
Understand the Diels-Alder reaction: It is a [4+2] cycloaddition reaction between a conjugated diene and a dienophile, resulting in the formation of a six-membered ring.
Identify the components of the Diels-Alder reaction: A diene is a molecule with two alternating double bonds, and a dienophile is typically an alkene or alkyne that can react with the diene.
Review the options provided: Analyze each option to determine if it includes a diene and a dienophile.
Option 1: An alkene and a halogen - This does not include a diene, so it is not suitable for a Diels-Alder reaction.
Option 2: A Grignard reagent and a carbonyl compound - This involves nucleophilic addition, not a Diels-Alder reaction. Option 3: An alcohol and an acid chloride - This involves esterification, not a Diels-Alder reaction. Therefore, the correct components for a Diels-Alder reaction are a diene and a dienophile.