Multiple Choice
In the reaction mechanism of nucleophilic substitution (SN1), which step occurs first?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following reactions is an example of a nucleophilic substitution reaction in organic chemistry?
A
E1 reaction
B
Diels-Alder reaction
C
E2 reaction
D
SN1 reaction
Verified step by step guidance1
Understand the concept of a nucleophilic substitution reaction: In organic chemistry, a nucleophilic substitution reaction involves the replacement of a leaving group by a nucleophile. This process can occur via two main mechanisms: SN1 and SN2.
Identify the characteristics of an SN1 reaction: The SN1 reaction is a two-step process where the leaving group departs first, forming a carbocation intermediate. This is followed by the nucleophile attacking the carbocation.
Compare the given reactions: E1 and E2 reactions are elimination reactions, not substitution reactions. The Diels-Alder reaction is a cycloaddition reaction, which is also not a substitution reaction.
Recognize that the SN1 reaction fits the criteria of a nucleophilic substitution reaction, as it involves the substitution of a leaving group by a nucleophile.
Conclude that among the options provided, the SN1 reaction is the correct example of a nucleophilic substitution reaction in organic chemistry.
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