Multiple Choice
In the context of organic chemistry reactions, which of the following is the correct location for the light-dependent reactions?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following statements is true about the Diels-Alder reaction?
A
It involves the formation of a carbocation intermediate.
B
It is a [4+2] cycloaddition reaction.
C
It is a type of nucleophilic substitution reaction.
D
It requires a radical initiator to proceed.
Verified step by step guidance1
Identify the Diels-Alder reaction as a type of pericyclic reaction, specifically a cycloaddition reaction.
Understand that the Diels-Alder reaction involves a diene and a dienophile, where the diene provides four π-electrons and the dienophile provides two π-electrons.
Recognize that the Diels-Alder reaction is classified as a [4+2] cycloaddition because it involves the combination of four π-electrons from the diene and two π-electrons from the dienophile.
Note that the Diels-Alder reaction proceeds through a concerted mechanism, meaning that bonds are formed and broken in a single step without the formation of intermediates such as carbocations or radicals.
Conclude that the statement 'It is a [4+2] cycloaddition reaction' is true, as it accurately describes the nature of the Diels-Alder reaction.
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