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Multiple Choice
Which of the following reactions is an example of a nucleophilic substitution reaction?
A
E2 reaction
B
SN1 reaction
C
E1 reaction
D
Diels-Alder reaction
Verified step by step guidance
1
Understand the concept of nucleophilic substitution reactions. These reactions involve the replacement of a leaving group by a nucleophile. They are characterized by the attack of a nucleophile on an electrophilic center, typically a carbon atom bonded to a leaving group.
Differentiate between SN1 and SN2 reactions, which are both types of nucleophilic substitution reactions. SN1 reactions are unimolecular, involving a two-step mechanism where the leaving group departs first, forming a carbocation intermediate, followed by nucleophilic attack.
Recognize that E2 and E1 reactions are elimination reactions, not substitution reactions. E2 reactions involve the removal of a proton and a leaving group simultaneously, while E1 reactions involve the formation of a carbocation intermediate followed by the loss of a proton.
Identify that the Diels-Alder reaction is a cycloaddition reaction, not a nucleophilic substitution. It involves the formation of a six-membered ring from a conjugated diene and a dienophile.
Conclude that among the given options, the SN1 reaction is the correct example of a nucleophilic substitution reaction, as it involves the substitution of a leaving group by a nucleophile through a two-step mechanism.