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Questions and Answers
Which of the following statements correctly describes the elimination reaction of 2-bromopentane to form pent-2-ene?
Which of the following statements correctly describes the elimination reaction of 2-bromopentane to form pent-2-ene?
- It is classified as an addition reaction.
- It results in the formation of a racemic mixture.
- It is a B-Elimination reaction. (correct)
- It follows the non-Zaitsev rule.
Which type of isomer are the two possible stereo-structures of CH3CHOHCOOH that are optically active?
Which type of isomer are the two possible stereo-structures of CH3CHOHCOOH that are optically active?
- Meso compounds
- Atropisomers
- Enantiomers (correct)
- Conformers
In an S_N2 reaction on chiral centers, what is typically observed?
In an S_N2 reaction on chiral centers, what is typically observed?
- Partial racemisation
- Only retention of configuration
- No change in chirality
- 100% inversion of configuration (correct)
What is the characteristic feature of a dehydrohalogenation reaction?
What is the characteristic feature of a dehydrohalogenation reaction?
Which of these reactions does NOT characterize the transformation of 2-bromopentane to pent-2-ene?
Which of these reactions does NOT characterize the transformation of 2-bromopentane to pent-2-ene?
Study Notes
Elimination reaction of 2-bromopentane
- The elimination reaction of 2-bromopentane to form pent-2-ene is a β-elimination reaction.
- It follows the Zaitsev rule, which states that the more substituted alkene is the major product.
- The reaction is a dehydrohalogenation reaction, a type of elimination reaction where a hydrogen halide is removed from a molecule.
Stereoisomers of CH3CHOHCOOH
- Two possible stereoisomers of CH3CHOHCOOH, which are optically active, are called enantiomers.
- Enantiomers are stereoisomers that are non-superimposable mirror images of each other.
SN2 reaction on chiral centres
- In an SN2 reaction on chiral centres, there is inversion more than retention leading to partial racemization.
- This means that the product will be a mixture of both enantiomers, with the inverted product being the major product.
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Description
This quiz covers important organic reactions including elimination, stereoisomers, and SN2 reactions. Understand the principles of β-elimination, the Zaitsev rule, and the characteristics of enantiomers. Test your knowledge on chiral centers and product outcomes in these reactions.
