Chemistry - STEREO ISOMERISM Question with Solution | TestHub
Geometrical isomerism is a kind of stereoisomerism which is present in the compounds containing a double bond (C=C, C=N, N=N) and arise due to the restricted or frozen rotation about the double bond. The atoms or groups attached to the doubly bonded carbons must be different. In aldoximes, the isomer is named as syn if hydrogen and hydroxyl groups are on the same side of C=N bond and if these are on opposite sides, the isomer is named as anti. In ketoximes, the prefixes syn and anti indicate which group of ketoxime is syn or anti to hydroxyl group.
Number of stereoisomers of the compound 2-chloro-4-methylhex-2-ene is/are
Options:
Answer:
Solution:
Question Explanation: Calculate the number of stereoisomers of the compound 2-chloro-4-methylhex-2-ene.
Concept: Stereoisomerism (Geometrical Isomerism (GI) and Optical Isomerism (OI)).
Solution: The compound is .
1. GI centers (): C2=C3.
C2 has Cl and CH₃ (different).
C3 has H and CH(Me)Et (different).
So, there is 1 GI center.
2. OI centers (): C4 is a chiral center. C4 is attached to H, CH₃, Et, CH=C(Cl)CH₃.
So, there is 1 OI center.
The total number of stereoisomers is .
Final Answer: Option (C)