Multiple Choice
Which factor increases the rate of a nucleophilic substitution reaction in organic chemistry?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following statements is not true about the Diels-Alder reaction?
A
It requires a radical initiator to proceed.
B
It is stereospecific, preserving the stereochemistry of the reactants.
C
It is a [4+2] cycloaddition reaction.
D
It involves the formation of a six-membered ring.
Verified step by step guidance1
Understand the Diels-Alder reaction: It is a [4+2] cycloaddition reaction where a conjugated diene reacts with a dienophile to form a six-membered ring.
Recognize that the Diels-Alder reaction is stereospecific, meaning the stereochemistry of the reactants is preserved in the product.
Identify that the Diels-Alder reaction does not require a radical initiator. It is a pericyclic reaction that proceeds through a concerted mechanism without the need for radicals.
Note that the reaction involves the formation of a six-membered ring, which is a characteristic feature of the Diels-Alder reaction.
Conclude that the statement 'It requires a radical initiator to proceed' is not true about the Diels-Alder reaction, as it proceeds through a concerted mechanism without radicals.
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