146
Question
Whichof following cannot undergo an E2 reaction?
Whichof following cannot undergo an E2 reaction?
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Solution
The correct option is A A
E2 is a bimolecular reaction. It is a single step reaction goes through a single transition state. It is a concerted reaction. In E2 reaction, two groups/atoms depart simultaneously from adjacent carbons with a proton being abstracted by a base.
In the compound (A), β− carbon doesn't have a proton group to undergo elimination. Thus, compound (A) does not undergo E2 elimination.
Compound (B) and (C) has β− carbon so they will undergo E2 elimination reaction.
E2 is a bimolecular reaction. It is a single step reaction goes through a single transition state. It is a concerted reaction. In E2 reaction, two groups/atoms depart simultaneously from adjacent carbons with a proton being abstracted by a base.
In the compound (A), β− carbon doesn't have a proton group to undergo elimination. Thus, compound (A) does not undergo E2 elimination.
Compound (B) and (C) has β− carbon so they will undergo E2 elimination reaction.
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