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Which of the following will have a mesoisomer also -
[AIEEE-2004]
- a)2 - Chlorobutane
- b)2, 3 - Dichlorobutane
- c)2,3 - Dichloropentane
- d)2-Hydroxypropanoic acid
Correct answer is option 'B'. Can you explain this answer?
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Which of the following will have a mesoisomer also -[AIEEE-2004] a)2 -...
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Which of the following will have a mesoisomer also -[AIEEE-2004] a)2 -...
Explanation:
Meso compounds are those which have an internal plane of symmetry and possess chiral centers. Therefore, the compound should have at least two chiral centers to exhibit meso isomerism.
Option A: 2-Chlorobutane does not have any chiral centers, so it cannot exhibit meso isomerism.
Option B: 2,3-Dichlorobutane has two chiral centers and also a plane of symmetry passing through the middle of the molecule, dividing it into two identical halves. Hence, it exhibits meso isomerism.
Option C: 2,3-Dichloropentane has three chiral centers and does not possess any plane of symmetry. Hence, it cannot exhibit meso isomerism.
Option D: 2-Hydroxypropanoic acid has one chiral center and does not possess any plane of symmetry. Hence, it cannot exhibit meso isomerism.
Therefore, the correct option is B. 2,3-Dichlorobutane will have a meso isomer as it has a plane of symmetry and two chiral centers.
Meso compounds are those which have an internal plane of symmetry and possess chiral centers. Therefore, the compound should have at least two chiral centers to exhibit meso isomerism.
Option A: 2-Chlorobutane does not have any chiral centers, so it cannot exhibit meso isomerism.
Option B: 2,3-Dichlorobutane has two chiral centers and also a plane of symmetry passing through the middle of the molecule, dividing it into two identical halves. Hence, it exhibits meso isomerism.
Option C: 2,3-Dichloropentane has three chiral centers and does not possess any plane of symmetry. Hence, it cannot exhibit meso isomerism.
Option D: 2-Hydroxypropanoic acid has one chiral center and does not possess any plane of symmetry. Hence, it cannot exhibit meso isomerism.
Therefore, the correct option is B. 2,3-Dichlorobutane will have a meso isomer as it has a plane of symmetry and two chiral centers.
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