Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMABSOLUTE AND RELATIVE CONFIGURATIONMedium2 minQB
ChemistryMediumsingle choice
Which of the following molecules are chiral? Identify the chirality center(s) in each.
(a) 
Coniine (poison hemlock) (b) 
Menthol (flavoring agent)
(c) 
Dextromethorphan (cough suppressant)
Options:
Answer:
A
Solution:
All three molecules are chiral. The chirality centers are marked with an asterisk (*) :
(a) 
Coniine : 1 (b) 
Menthol : 3
(c) 
Dextromethorphan : 3
The amine nitrogen is not counted as a chirality center: it undergoes rapid pyramidal inversion at room temperature, so its configuration is not stable.
Ans. (a), (b) and (c) are chiral. Chirality centers : (a) 1 (b) 3 (c) 3
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:ABSOLUTE AND RELATIVE CONFIGURATION
⏱ 2mℹ️ Source: QB
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