Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMCHIRAL CENTRE AND CHIRAL MOLECULESMedium2 minQB
ChemistryMediumsingle choice
Which of the following compounds has an asymmetric center?
(a) CH3CH2CH(Cl)CH3 (b) CH3CH2CH(CH3)CH3 (c) CH3CH2C(CH3)(Br)CH2CH2CH3
(d) CH3CH2OH (e) CH3CH2CH(NH2)CH2CH3 (f) CH2=CHCH(Br)CH3
Options:
Answer:
A
Solution:
Ans. (A) (a), (c) and (f).
Sol. An asymmetric center is a carbon attached to four different groups.
(a) C2 of 2-chlorobutane carries H, Cl, CH3 and C2H5 : asymmetric.
(b) C2 of 2-methylbutane carries two CH3 groups : not asymmetric.
(c) C3 of 3-bromo-3-methylhexane carries Br, CH3, C2H5 and n-C3H7 : asymmetric.
(d) Ethanol has no carbon with four different groups.
(e) C3 of 3-aminopentane carries two C2H5 groups : not asymmetric.
(f) C3 of 3-bromobut-1-ene carries H, Br, CH3 and CH=CH2 : asymmetric.
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:CHIRAL CENTRE AND CHIRAL MOLECULES
⏱ 2mℹ️ Source: QB
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