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Which of the following statements is true regarding the E2 mechanism?

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Question: Which of the following statements is true regarding the E2 mechanism?

Options:

  1. It requires a strong base
  2. It can occur with tertiary substrates only
  3. It involves a carbocation intermediate
  4. It is a unimolecular reaction

Correct Answer: It requires a strong base

Solution: 

E2 mechanisms require a strong base to abstract a proton while the leaving group departs in a concerted manner.

Which of the following statements is true regarding the E2 mechanism?

Practice Questions

Q1
Which of the following statements is true regarding the E2 mechanism?
  1. It requires a strong base
  2. It can occur with tertiary substrates only
  3. It involves a carbocation intermediate
  4. It is a unimolecular reaction

Questions & Step-by-Step Solutions

Which of the following statements is true regarding the E2 mechanism?
  • Step 1: Understand that E2 is a type of elimination reaction in organic chemistry.
  • Step 2: Know that in an E2 reaction, a strong base is needed to remove a hydrogen atom (proton) from the molecule.
  • Step 3: Recognize that while the base removes the proton, the leaving group (like a halide) simultaneously departs from the molecule.
  • Step 4: Remember that this process happens in one single step, which is why it is called 'concerted'.
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